: 1.21 $2024-03-28T20:10:14-7:0044.222.249.19searchRMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7273Timothy W. Chumley Randy Pratt1997103276U.S.A.ColoradoFremont[location and coordinates withheld]1560On a weedy, disturbed site with some outcrops of Niobrara formation shale in pinyon-juniper with Frankenia jamesii, and drainage from an industrial chemical storage facility. Phenology: fruiting.RMRM653838 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.58699Ronald L. Hartman Jim Fowler1997726207U.S.A.WyomingParkNorthern Absaroka Area: east side of Sheep Mountain, ca 8 air mi SW of top of Cedar Mountain.-109.305144.421117371829Eroded shales and sandstones with wet spots. Phenology: fruiting.RMRM653839 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.58754Ronald L. Hartman Jim Fowler1997726207U.S.A.WyomingParkNorthern Absaroka Area: east side of Sheep Mountain, ca 11 air mi SW of Cedar Mountain.-109.305144.392217072012Sedimentary slopes with wet spots. Phenology: flowering.RMRM653840 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59052Ronald L. Hartman1997729210U.S.A.WyomingParkNorthern Absaroka Area: Cabin Creek.-109.657444.125720422317Stream bottom and adjacent hills. Phenology: flowering.RMRM653841 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59422Ronald L. Hartman1997811223U.S.A.WyomingParkNorthern Absaroka Area: Bobcat Creek Trail.-109.503244.287818901951Sagebrush slope and streamside. Phenology: flowering.RMRM653842 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59580Ronald L. Hartman1997813225U.S.A.WyomingParkNorthern Absaroka Area: road S of the North Fork Shoshone River, ca 0.5 air mi E of Wapiti.-109.40644.46451707Roadside and slope to river. Phenology: flowering & fruiting.RMRM653843 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59717Ronald L. Hartman1997813225U.S.A.WyomingParkNorthern Absaroka Area: Buffalo Bill Reservoir, ca 10 air mi ESE of Wapiti.-109.244644.43561676Area of water fluxuation and roadside. Phenology: flowering.RMUSFS653844 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59746Ronald L. Hartman1997813225U.S.A.WyomingParkNorthern Absaroka Area: Buffalo Bill Reservoir, ca 12 air mi ESE of Wapiti.-109.184144.45011676Lakeside, roadside, and along irrigation canal. Phenology: flowering & fruiting.RMRM653769 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59795Ronald L. Hartman1997815227U.S.A.WyomingParkNorthern Absaroka Area: ca 3 air mi SE of Cedar Mountain summit.-109.123644.46451707Clay badlands. Phenology: flowering.RMRM653845 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59802Ronald L. Hartman1997815227U.S.A.WyomingPark[location and coordinates withheld]1768Roadside in clayey soil. Phenology: flowering.RMRM653846 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59829Ronald L. Hartman1997815227U.S.A.WyomingParkNorthern Absaroka Area: Rock Creek and South Fork Road, ca 17 air mi SW of Cedar Mountain summit.-109.40644.31981981Disturbed areas and under cottonwoods. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57983B. E. Nelson Peter Ebertowski2002814226U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: along the Cheyenne River from Sheep Creek down stream ca 1 mi, ca 22 air mi NE of Bill; ca 54 air mi NNE of Douglas.-104.950843.45621307Banks along the river. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.58006B. E. Nelson Peter Ebertowski2002814226U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: along the Cheyenne River ca 2 air mi below confluence of Antelope Creek and Dry Fork Cheyenne River, ca 18.5 air mi NE of Bill; ca 50 air mi NNE of Douglas.-105.010743.427513041329Sand bars and sandy silt flats along the river. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.58032B. E. Nelson2002815227U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: along Little Thunder Creek ca 1 mi below Little Thunder Reservoir, ca 8 air mi SE of Wright; ca 43 air mi S of Gillette.-105.349243.685914481463Bench and low meadow areas along the stream. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.58132B. E. Nelson2002816228U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: along Antelope Creek at Phillips or Forest Road 973, ca 17 air mi N of Bill; ca 51 air mi N of Douglas.-105.170543.47061359Moist to wet flats along the creek. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1362Peter J. Ebertowski200277188U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: right of way on County Road 68, ca 16.5 air mi ENE of Weston; ca 37 air mi NE of Gillette.-105.015244.658612431250Side of road. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1712Peter J. Ebertowski2002715196U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Spring Creek on County Road 91, ca 28 air mi NE of Gillette; ca 23 air mi NNW of Moorcroft.-105.116544.570412431262Roadside along creek bed. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1770Peter J. Ebertowski2002715196U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: Brosa Draw on County Road 116, ca 22 air mi N of Moorcroft; ca 36 air mi ENE of Gillette.-104.905644.58312431274Creek bed. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1830Peter J. Ebertowski2002717198U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Little Thunder Reservoir on dirt road ca 0.7 mi off Highlight or County Road 52, ca 7.5 air mi SE of Wright; ca 43 air mi S of Gillette.-105.369143.685914541463Shore of reservoir. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2231Peter J. Ebertowski2002726207U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Soukup Draw on Hall Road, ca 16 air mi NNW of Gillette; ca 17 air mi SSE of Recluse.-105.601244.510212561262Roadside in sagebrush/grassland. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2259Peter J. Ebertowski2002727208U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: hills E of Wildcat Creek on Wyo Hwy 450, ca 30 air mi WSW of Newcastle; ca 37 air mi E of wright.-104.750843.685913471362Roadside in sagebrush/grassland. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2290Peter J. Ebertowski2002727208U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Piney Creek on Piney Creek or County Road 17, ca 24 air mi ESE of Wright; ca 27 air mi NNE of Bill.-105.069943.586814201445Creek bed. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2469Peter J. Ebertowski2002731212U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: West Plum Creek on Plum Creek Road, ca 6.5 air mi NW of Newcastle; ca 21 air mi SE of Upton.-104.28943.935913531365Roadside along creek floodplain. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2514Peter J. Ebertowski200282214U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: hills N of Weston Peak on Forest Road 1246, ca 25 air mi NNE of Gillette; ca 33 air mi NW of Moorcroft.-105.359544.629211981280Wide grassy ravine. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2561Peter J. Ebertowski200282214U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Wild Horse Creek on York or Forest Road 900, ca 27 air mi NNE of Gillette; ca 24 air mi N of Rozet.-105.217844.629212071234Creek bank and floodplain. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2578Peter J. Ebertowski200284216U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: South Branch Beaver Creek on Wyo Hwy 116, ca 6.5 air mi SW of Upton; ca 19 mi SE of Moorcroft.-104.731444.034113291335Roadside in sagebrush/grassland. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2690Peter J. Ebertowski200287219U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Lodgepole Creek on Wyo Hwy 116, ca 30 air mi W of Newcastle; ca 17 air mi SSW of Upton.-104.790743.785113011314Creek bed. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2725Peter J. Ebertowski2002811223U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Wyo Hwy 450, N of Little Thunder Creek, ca 25 air mi ESE of Wright; ca 3 air mi E of Campbell County.-105.0343.657613381344Roadside in sagebrush/grassland. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2819Peter J. Ebertowski2002811223U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Skull Creek on U.S. Hwy 16, ca 8 air mi NW of Newcastle; ca 18.5 air mi SE of Upton.-104.349443.921812711277Creek bed. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2903Peter J. Ebertowski B. E. Nelson2002814226U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: reservoir on creek immediately W of Sheep Creek and S of its confluence with Sheep Creek, ca 21 air mi NE of Bill; ca 35 air mi SE of Wright.-104.970843.427513141320Creek bank lined by Elaeagnus. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2964Peter J. Ebertowski2002815227U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: along Lodgepole Creek immediately below its confluence with Hay Creek, on Wyo Hwy 450, ca 24 air mi WSW of Newcastle; ca 27 air mi S of Upton.-104.67143.700112651280Low bank of creek. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3076Peter J. Ebertowski2002816228U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Beaver Creek upstream and ca 0.8 air mi W of its confluence with Hay Creek, on Old Highway 85, ca 22 air mi SSE of Newcastle; ca 12.5 air mi NNE of Mule Creek Junction.-104.112543.530111211140Creek bank. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3140Peter J. Ebertowski2002818230U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: playa and grassland ca 1.5 air mi N of North Prong Little Thunder Creek on County Road 89, ca 8 air mi E of Wright; ca 38 air mi SSE of Gillette.-105.329243.742614391448Depressions above playa. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3251Peter J. Ebertowski2002819231U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: School Creek ca 1.5 air mi S of its confluence with Little Thunder Creek, on School Creek or Forest Road 968, ca 17 air mi ESE of Wright; ca 47 air mi SSE of Gillette.-105.189643.643414081426Wide flat creek bank dominated by Spartina and Cirsium. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3376Peter J. Ebertowski2002823235U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: roadside of Wyo Hwy 59, ca 1.6 air mi SE of Dry Fork Cheyenne River, ca 5.5 air mi NW of Bill; ca 38 air mi N of Douglas.-105.330343.29821420Roadside in sagebrush/grassland. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3491Peter J. Ebertowski2002826238U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: along Piney Creek off of Piney Canyon or County Road 17, ca 25 air mi SE of Wright; ca 27 air mi NNE of Bill.-105.0543.586813961414Wet area below stock tank. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3557Peter J. Ebertowski2002830242U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: Sage Creek on County Road 64, ca 14 air mi NNE of Lusk; ca 19 air mi NE of Manville.-104.337642.9441347Creek bank. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3608Peter J. Ebertowski2002830242U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: along U.S. Hwy 85 between Bobcat Creek and Cheyenne River, ca 28 air mi S of Newcastle; ca 5 air mi N of Mule Creek Junction.-104.205243.44841118Roadside in sagebrush/grassland. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6804Peter J. Ebertowski2003716197U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Rochelle Hills N of Wildcat Creek, on two-track road off Rochelle Hills or Forest Road 933, ca 19 air mi SE of Wright; ca 56 air mi SSE of Gillette.-105.113444.146414931536Rocky slope above spring. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7164Peter J. Ebertowski2003725206U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: Duck Creek, on U.S. Hwy 14, ca 3 air mi NE of Moorcroft; ca 22 air mi E of Gillette.-104.912744.31412561262Creek bank lined with snowberry. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7236Peter J. Ebertowski2003727208U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: tributary of Dry Fork Spring Creek, on York or Forest Road 900, ca 30 air mi NE of Gillette; ca 31 air mi NW of Moorcroft.-105.217844.673311951250Gently sloping ravine with silver sagebrush. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7330Peter J. Ebertowski2003727208U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: ridge E of Short Creek, on road continuing Forest Road 1246, ca 34 air mi NW of Moorcroft; ca 24 air mi N of Gillette.-105.444.629212431371Ravine slope with scattered ponderosa pine and Rocky Mountain juniper. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7346Peter J. Ebertowski2003729210U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: grassland N of Little Thunder Creek, on Wyo Hwy 450, ca 28 air mi ESE of Wright; ca 39 air mi WSW of Newcastle.-104.970243.657613291341Sandstone outcrop. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7386Peter J. Ebertowski2003729210U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Turner Creek, on Forest Road 914, ca 16 air mi NW of Newcastle; ca 12 air mi ESE of Upton.-104.409744.034113351384Creek bank, redtop and prairie cordgrass abundant. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7473Peter J. Ebertowski2003731212U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Woody Creek, on two-track off Forest Road 944, ca 29 air mi SE of Wright; ca 11 air mi N of Bill.-105.230443.384413841402Creek bank. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7492Peter J. Ebertowski2003731212U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Sunny Draw, on two-track off Forest Road 973, ca 23 air mi SE of Wright; ca 53 air mi N of Douglas.-105.189643.51614081487Sagebrush grassland, Elymus spicatus abundant. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7562Peter J. Ebertowski200382214U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: West Fork Duck Creek, on two-track off Forest Road 903, ca 34 air mi NNE of Gillette; ca 34 air mi NNW of Moorcroft.-105.197544.73212131265Ravine with occasional boxelder and ash on slopes. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7628Peter J. Ebertowski200382214U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Cedar Draw, on Wyo Hwy 59, ca 16 air mi N of Gillette; ca 30 air mi NW of Moorcroft.-105.439244.525212161341Creek bed. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7666Peter J. Ebertowski200384216U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: upper (northern) part of Fields Draw, on Wyo Hwy 450, ca 32 air mi WSW of Newcastle; ca 33 air mi E of Wright.-104.850543.685913171353Ravine floor, with scattered big sagebrush. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7723Peter J. Ebertowski200384216U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Buffalo Creek, on Watt Road, ca 8 air mi SSE of Moorcroft ca 14 air mi ENE of Upton.-105.03344.132413171353Slope along creek. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7760Peter J. Ebertowski200386218U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Beaver Creek, on Wyo Hwy 450, ca 8 air mi SW of Newcastle; ca 13 air mi S of Osage.-104.371843.799211891195Roadside in greasewood grassland. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7815Peter J. Ebertowski200387219U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Little Thunder Creek, on Wyo Hwy 450, ca 18 air mi ESE of Wright; ca 48 air mi WSW of Newcastle.-105.149743.671813781384Creek bank. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7978Peter J. Ebertowski2003810222U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Mush Creek, ca 1.5 mi upstream of Klodt Reservoir, on Wyo Hwy 450, ca 11 air mi W of Newcastle, ca 13 air mi S of Osage.-104.431643.785112041213Ravine floor in sagebrush grassland. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8011Peter J. Ebertowski2003811223U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Browner Draw, on two-track off Steinle or County Road 40, ca 34 air mi SSE of Wright; ca 42 air mi NNE of Douglas.-105.150543.341313991423Slope along creek with greasewood and sagebrush. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8053Peter J. Ebertowski2003811223U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Lake Creek and hills to the E, on Forest Road 1420C, ca 34 air mi SE of Wright; ca 44 air mi NNE of Douglas.-105.090643.3713591405Creek bank. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8088Peter J. Ebertowski2003813225U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: West Fork Cottonwood Creek, on Avon Road, ca 15 air mi ENE of Gillette; ca 6 air mi N of Rozet.-105.216444.359212561286Creek bank. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8192Peter J. Ebertowski2003813225U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Little Powder River, on Wyo Hwy 59, ca 11 air mi N of Gillette; ca 30 air mi NW of Moorcroft.-105.459444.449812431317Stream bank. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8254Peter J. Ebertowski2003815227U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Antelope Creek, on two-track off Forest Road 973, ca 25 air mi SE of Wright; ca 54 air mi SW of Newcastle.-105.190543.470613471359Floodplain with silver sagebrush and widely spaced cottonwoods. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8283Peter J. Ebertowski2003817229U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Black Thunder Creek, on Cheyenne River or County Road 54, ca 31 air mi SW of Newcastle; ca 40 air mi ESE of Wright.-104.730843.57261250Steep creek bank. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8311Peter J. Ebertowski2003817229U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Beaver Creek, ca 0.3 mi N of its confluence with South Beaver Creek, off U.S. Hwy 85, ca 16 air mi S of Newcastle; ca 16 air mi N of Mule Creek Junction.-104.192343.615111401161Creek bank. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8342Peter J. Ebertowski2003819231U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: ridge E of Lone Tree Creek, on Raven Creek or County Road 18, ca 34 air mi W of Newcastle; ca 25 air mi S of Moorcroft.-104.912443.907814081451Grassy ravine floor with silver sagebrush. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8419Peter J. Ebertowski2003819231U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: Little Missouri River, on County Road 200, ca 32 air mi N of Moorcroft; ca 35 air mi NW of Sundance.-104.925744.72431173Steeply sloped river bank. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8526Peter J. Ebertowski2003822234U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Antelope Creek, ca 0.5 mi W of its confluence with Wildcat Creek, on Forest Road 949, ca 28 air mi SE of Wright; ca 51 air mi NNE of Douglas.-105.110643.441813171341Grassy wash. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8565Peter J. Ebertowski2003824236U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Deep Creek, on Elliott or County Road 8, ca 21 air mi W of Newcastle; ca 22 air mi S of Upton.-104.65143.770912921298Floodplain of grasses and forbs, annuals abundant. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8615Peter J. Ebertowski2003825237U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: reservoirs between Weston and Little Powder River, on Forest Road 908, ca 27 air mi NNE of Gillette; ca 32 air mi NW of Moorcroft.-105.31944.643911281146Area of silver sagebrush and crested wheatgrass around reservoir. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.63227B. E. Nelson2004919263U.S.A.ArizonaCoconinoKaibab National Forest: Kaibab Plateau: Warm Springs Canyon at the junction of Forest roads 461 and 462, ca 4 air mi WSW of Jacob Lake; ca 22 air mi SE of Fredonia.-112.290936.691822072256Roadside. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.63498B. E. Nelson2004924268U.S.A.ArizonaCoconinoCoconino National Forest: from the observation point along County Road 3 (Forest Hwy 3) 0.5 mi out into Morman Lake bed, SSE of Bass Point, ca 20 air mi SE of Flagstaff.-111.438134.963121642225Roadside and cut. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.63626B. E. Nelson James F. Fowler2004925269U.S.A.ArizonaCoconinoCoconino National Forest: in James Canyon 1/2 - 3/4 mi W of I-17, ca 11 air mi S of Flagstaff.-111.693935.047519601981Sand bar in end of box canyon. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.79912Ronald L. Hartman2004822235U.S.A.ArizonaCoconinoCoconino National Forest: County Road (Forest Hwy) 3, ca 9 air mi N of Clints Well.-111.375334.65882247Roadside. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.80039Ronald L. Hartman2004823236U.S.A.ArizonaCoconinoKaibab National Forest: Red Tank, ca 3 air mi NE of intersection of Forest Road 194 and County Road 141, ca 18 air mi NW of Flagstaff.-111.903235.37722260Disturbed areas. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.80064Ronald L. Hartman2004823236U.S.A.ArizonaCoconinoCoconino National Forest: U.S. Hwy 180, ca 5 air mi NW of Flagstaff center, between mile posts 220-221.-111.686235.24562195Highway right of way including ponderosa pine margin. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.80227Ronald L. Hartman2004829242U.S.A.ArizonaCoconinoCoconino National Forest: County Road (Forest Hwy) 3, just SW of Mormon Lake Ranger District Office, for 0.7 air mi SW of coordinate.-111.65635.15262134Ponderosa pine woodland and adjacent highway right of way. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.80342Ronald L. Hartman James F. Fowler2004828241U.S.A.ArizonaCoconinoCoconino National Forest: Sterling Canyon, last mile of Manzanita Trail to Manzanita Campground and down road to Encinoso Picnic Area.-111.74734.936614411478Ponderosa pine slopes. Phenology: flowering & fruiting.RMRM726151 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11275Erwin F. Evert1986822234U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: in canyon just W of Chimney Rock, ca 1/8-1/4 mi N of U.S. Hwy 14, 16, and 20.-109.805344.461819371951Open Douglas fir forest interspersed with rocky openings. Phenology: flowering.RMRM726406 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11534Erwin F. Evert1986826238U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along U.S. Hwy 14, 16, and 20, opposite Henry Ford Rock.-109.76544.46181905Disturbed roadside turn-out area. Phenology: flowering & fruiting.RMRM732680 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.13643Erwin F. Evert1987812224U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: ridge immediately W of Sheep Creek, ca 1/4-1/2 mi S of U.S. Hwy 14, 16, and 20.-109.76544.447319511981Rocky, open, sparsely vegetated ridge with scattered douglas fir. Phenology: fruiting.RMRM732590 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.13760Erwin F. Evert1987814226U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: along Sheep Creek, ca 2-3 mi S of U.S. Hwy 14, 16, and 20.-109.785144.432819812012Gravel bars in the open. Phenology: flowering & fruiting.RMRM752028 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.15856Erwin F. Evert198887220U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along Moss Creek, ca 1/2 mi N of U.S. Hwy 14, 16, and 20.-109.724744.46181920Moist-wet gravel bar/streamside dominated by Alnus incana ssp. tenuifolia and Salix bebbii. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.66767B. E. Nelson James F. Fowler2005916259U.S.A.ArizonaCoconinoKaibab National Forest: Kaibab Plateau: between U.S. Hwy 89A and House Rock Canyon in the vicinity of the scenic overlook, ca 8-8.5 air mi E of Jacob Lake; ca 29.5-30 air mi SE of Fredonia.-112.058636.722217681844Roadside and right-of-way. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.26162Erwin F. Evert1993724205U.S.A.IdahoMadisonTarghee National Forest: Big Hole Mountains: along the north side of Forest Road 219, ca 1.5 mi N of Graham Spring; ca 16 mi WNW of Driggs.-111.412643.75972195Rocky shrubland with Purshia tridentata, Symphoricarpos oreophilus, Astragalus convallarius, and Agropyron spicatum.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.66965B. E. Nelson James F. Fowler2005917260U.S.A.ArizonaCoconinoKaibab National Forest: Kaibab Plateau: Crazy Jug Point on the North Rim of Grand Canyon, ca 22.5 air mi SW of Jacob Lake; ca 36.5 air mi SSE of Fredonia.-112.403736.42732268Roadside and parking area in pinyon/juniper forest on canyon rim. Phenology: fruiting.RMRM610827 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.26300Erwin F. Evert199381213U.S.A.MontanaGallatinGallatin National Forest: Madison Canyon: just W of Beaver Creek along U.S. Highway 287, ca 25 mi NW of West Yellowstone.-111.365544.86081969Road shoulder with Marticaria matricariodes, Bromus inermis, and Medicago lupulina. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.26382Erwin F. Evert199381213U.S.A.MontanaMadison[location and coordinates withheld]1814Disturbed and mowed areas above river with Bromus inermis, Sisymbrium altissimum, Matricaria matricarioides, and Alyssum desertorum.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.67027B. E. Nelson James F. Fowler2005917260U.S.A.ArizonaCoconinoKaibab National Forest: Kaibab Plateau: at the junction of Forest roads 425 and 232 in Indian Hollow at the north end of Big Saddle, ca 20.5 air mi SW of Jacob Lake; ca 34 air mi S of Fredonia.-112.410536.4652085Disturbed area in and around corral. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.67033B. E. Nelson James F. Fowler2005917260U.S.A.ArizonaCoconinoKaibab National Forest: Kaibab Plateau: at the junction of Forest roads 425 and 232 in Indian Hollow at the north end of Big Saddle, ca 20.5 air mi SW of Jacob Lake; ca 34 air mi S of Fredonia.-112.410536.4652085Disturbed area in and around corral. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29745Erwin F. Evert199576187U.S.A.MontanaSweet Grass[location and coordinates withheld]1158Disturbed, weedy riparian area and field with Bromus tectorum, Medicago lupulina, and Poa pratensis.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.30488Erwin F. Evert199585217U.S.A.MontanaParkAbsaroka-Beartooth Mountains: Gallatin National Forest: ridge at head of Arrastra Creek: ca 3 mi E of Emigrant Peak, 18 mi N of Gardiner.-110.626145.255628652987Open, rocky east facing slope along jeep trail with scattered Pinus albicaulis and Abies lasiocarpa and with Saxifraga bronchialis, Arnica longifolia, Penstemon fruticosus, and Potentilla glandulosa in groundlayer.RMRM783869 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.30491Erwin F. Evert199585217U.S.A.MontanaParkAbsaroka-Beartooth Mountains: Gallatin National Forest: ridge at head of Arrastra Creek: ca 3 mi E of Emigrant Peak, 18 mi N of Gardiner.-110.626145.255628652987Open, rocky east facing slope along jeep trail with scattered Pinus albicaulis and Abies lasiocarpa and with Saxifraga bronchialis, Arnica longifolia, Penstemon fruticosus, and Potentilla glandulosa in groundlayer. Phenology: buds.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.67437B. E. Nelson James F. Fowler2005924267U.S.A.ArizonaCoconinoKaibab National Forest: Coconino Plateau: along Forest Road 302, ca 3 air mi S of South Rim Grand Canyon, ca 9.5 air mi ESE of Tusayan; ca 55 air mi NNW of Flagstaff.-111.964135.942922312237Meadow and shallow valley. Phenology: flowering & fruiting.RMRM787513 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.32592Erwin F. Evert199686219U.S.A.MontanaCarbonBeartooth Range foothills: along west side of East Rosebud Creek, ca 3 mi S of Roscoe.-109.513745.31031634Weedy gravel workings just east of road with Rumex acetosella, Filago arvensis, and Lactuca serriola. Phenology: buds.RMRM819653 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33731Erwin F. Evert1997710191U.S.A.IdahoFremontSnake River Plains: in Ashton along railroad tracks and around grain elevators just S of Main Street and E of school.1603Gravelly soil with Kochia scoparia, Polygonum aviculare, and Tribulus terrestris. Phenology: flowering & fruiting.RMRM819173 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34452Erwin F. Evert199785217U.S.A.MontanaParkParadise Valley: Grey Owl/Chicory Public Fishing accesses along the west side of the Yellowstone River, 19 mi S of Livingston.1487Disturbed riparian community adjacent to corrals with Bromus tectorum, Melilotus officinalis, Centaurea maculosa, and Populus balsamifera. Phenology: flowering & fruiting.RMRM819938 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34575Erwin F. Evert199785217U.S.A.MontanaSweet GrassGrey Bear Campground/Boating Access, along the south side of the Yellowstone River, 6 mi SW of Big Timber.1250Disturbed riparian community on sandy soil with Populus angustifolia, Cornus sericea, Chenopodium botrys, and Spartina pectinata. Phenology: flowering & fruiting.RMRM819978 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34616Erwin F. Evert199786218U.S.A.MontanaCarbonEast Bridger, along Burlington Northern tracks E of town.1106Disturbed area around grain elevators with Distichlis stricta, Bromus tectorum, and Kochia scoparia. Phenology: flowering & fruiting.RMRM819826 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34718Erwin F. Evert1997811223U.S.A.WyomingParkBighorn Basin: in Cody at north end of 14th Street.1524Disturbed sagebrush-grassland and roadside with Bouteloua gracilis, Kochia scoparia, Sporobolus cryptandrus, and Sisymbrium altissimum. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.69630B. E. Nelson James F. Fowler2006823235U.S.A.ArizonaCoconinoCoconino National Forest: northwest edge of Black Bill Park just E of U.S. Hwy 89 on Forest Road 776, ca 10.5 air mi NE of Flagstaff.-111.544835.32922073Open ponderosa pine grassland with basalt outcrop. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.69763B. E. Nelson James F. Fowler2006824236U.S.A.ArizonaCoconinoCoconino National Forest: frontage road (old U.S. Hwy 66) along I-40 on Bellemont Flat, just W of Bellemont Exit and just N of Camp Navajo Army Depot, ca 10.5 air mi WNW of Flagstaff.-111.828435.24262173Wet clay soil in a barrow pit-scraped area. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.69854B. E. Nelson James F. Fowler2006824236U.S.A.ArizonaCoconinoKaibab National Forest: Barney Flat at the intersection of Forest Road 108 and County Road 73, ca 6 air mi S of Williams.-112.157635.16432137Forb meadow and adjacent roadside. Phenology: flowering & fruiting.RMRM795038 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.58972B. E. Nelson2003710191U.S.A.ColoradoArchuletaEastern San Juan Mountains: Valle Seco and ridge S of the head of Frio Canyon, ca 9.5 air mi S of Pagosa Springs.-106.994337.125621212252Grassy or sagebrush-grass flats. Phenology: flowering & fruiting.RMRM795037 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.59604B. E. Nelson2003717198U.S.A.ColoradoLa PlataEastern San Juan Mountains: between Sauls and Crowbar creeks off Forest Road 755, ca 3.5 air mi E of Bayfield.-107.536937.235121462201Recently low intensity burned ponderosa pine forest. Phenology: flowering.RMRM795041 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2725Jeanette Flaig2003816228U.S.A.ColoradoArchuletaEastern San Juan Mountains: San Juan National Forest: U.S. Hwy 160 W to Forest Road 620 then ca 4 road mi NNW; ca 21 air mi W of Pagosa Springs. Central-107.379737.26842185Roadside and grazed opening in ponderosa pine forest. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.70208B. E. Nelson James F. Fowler2006827239U.S.A.ArizonaCoconinoKaibab National Forest: Kaibab Plateau: Murray Lake just W of Ariz Hwy 67, ca 6 air mi SSE of Jacob Lake; ca 29 air mi SE of Fredonia.-112.17636.63092599Meadow in bottom of large limestone sink. Phenology: buds.RMRM795040 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2814Jeanette Flaig2003816228U.S.A.ColoradoArchuletaEastern San Juan Mountains: San Juan National Forest: U.S. Hwy 160 W to Forest Road 743; ca 9 air mi E of Bayfield.-107.463137.25882560Ponderosa pine woodland into xeric meadow. Phenology: flowering & fruiting.RMRM795039 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2912Jeanette Flaig2003819231U.S.A.ColoradoArchuletaEastern San Juan Mountains: San Juan National Forest: Coal Creek Trailhead: U.S. Hwy 160 W to Fawn Gulch Road; ca 6 air mi E of Pagosa Springs.-106.87537.323426022661Douglas fir, ponderosa pine and aspen forest with Quercus understory. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.70295B. E. Nelson James F. Fowler2006828240U.S.A.ArizonaCoconinoCoconino National Forest: at the intersection of U.S. Hwy 89 and Forest Road 418-420 just E of the base of San Francisco Mountain, ca 12.5 air mi NNE of Flagstaff.-111.576335.37232213Roadside, barrow pit, and adjacent ponderosa pine savana. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.70404B. E. Nelson James F. Fowler2006828240U.S.A.ArizonaCoconinoCoconino National Forest: Lockett Meadow in Interior Valley on east side of San Francisco Mountain, ca 11 air mi N of Flagstaff.-111.625435.355726092646Meadow. Phenology: buds.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.62772B. E. Nelson2004817230U.S.A.ColoradoArchuletaEastern San Juan Mountains: Turkey Mountain and to the W along Forest Road 651 at the northeast base of Eightmile Mesa, ca 7 air mi SSE of Pagosa Springs.-106.958337.177222712395Meadow and openings in ponderosa pine/Rocky Mountain juniper/Gambels oak forest. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.62825B. E. Nelson2004818231U.S.A.ColoradoArchuletaEastern San Juan Mountains: the high point on Forest Road 766 above the head of Spring Creek, Ritter Canyon, Armstrong Canyon, and Salt Canyon, ca 10.5 air mi NE of Ignacio; ca 7.5 air mi ESE of Bayfield.-107.472737.194426582704Meadows and openings among Gambels oak thickets. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.70544B. E. Nelson James F. Fowler2006831243U.S.A.ArizonaCoconinoCoconino National Forest: at the intersection of Ariz Hwy 87 and Forest Road 300 in the vicinity of Baker Lake, ca 1 air mi N of the Mogollon Rim, ca 53 air mi SSE of Flagstaff.-111.39634.45462265Highway right-of-way and adjacent ponderosa pine forest with oak. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.70713B. E. Nelson James F. Fowler2006831243U.S.A.ArizonaCoconinoCoconino National Forest: Mogollon Rim: along Forest Road 218 on Milk Ranch Point above Webber Creek drainage, ca 3 air mi ENE of Pine; ca 56 air mi SSE of Flagstaff.-111.411234.407321822195Roadside, parking and camp site area, and mixed conifer forest on the rim. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.70717B. E. Nelson James F. Fowler2006831243U.S.A.ArizonaCoconinoCoconino National Forest: Mogollon Rim: along Forest Road 218 on Milk Ranch Point above Webber Creek drainage, ca 3 air mi ENE of Pine; ca 56 air mi SSE of Flagstaff.-111.411234.407321822195Roadside, parking and camp site area, and mixed conifer forest on the rim. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.83757Ronald L. Hartman2006912255U.S.A.ArizonaCoconinoCoconino National Forest: 2 air mi N of Saddle Mountain.-111.72435.458924082515Base to top of cinder cone. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.83935Ronald L. Hartman James F. Fowler2006913256U.S.A.ArizonaCoconinoCoconino National Forest: Milk Ranch Point Road (Forest Road 218), Dickenson Flat.-111.407834.41792182Fenced-in meadow dominated by Bouteloua simplex. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.84028Ronald L. Hartman2006914257U.S.A.ArizonaCoconinoCoconino National Forest: roadside pullout on I-17, ca 9 air mi SE of Sedona.-111.600234.80819201951Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.84158Ronald L. Hartman2006914257U.S.A.ArizonaYavapaiPrescott National Forest: Forest Road 132, 4.3 road mi from Ariz Hwy 89A at fork to Mingus Springs Camp.-112.150834.67242085Tank and roadsides. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.84292Ronald L. Hartman James F. Fowler2006914257U.S.A.ArizonaCoconinoCoconino National Forest: Anderson Mesa: Yaeger Lake and tanks.-111.311634.90682126Old lake bottom and tank bottoms. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.84392Ronald L. Hartman James F. Fowler2006914257U.S.A.ArizonaCoconinoCoconino National Forest: Transfer Station at Willard Interchange on I-17.-111.692534.97362054Roadsides and disturbed areas around station. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.84456Ronald L. Hartman James F. Fowler2006919262U.S.A.ArizonaGilaTonto National Forest: ca 3 air mi W of Mogollon Rim Visitor Center at Two Sixty Trailhead.-110.95134.307620122042Mixed conifer with herbaceous understory. Phenology: flowering & fruiting.RMUSFS480312 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.127Arthur D. Read1912825238U.S.A.ArizonaCoconinoTusayan National Forest: Clover Ranger Station.-112.215835.236892073Along draw. Phenology: flowering & fruiting.RMRM625105 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.49019Ronald L. Hartman1994731212U.S.A.WyomingTetonGros Ventre Area: ridge just N of Lower Horse Creek, ca 1.5 air mi NNE of Hoback Junction.-110.763143.342419201981Roadside, meadow, and cliffs. Phenology: fruiting.RMRM625104 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.49839Ronald L. Hartman1994820232U.S.A.WyomingSubletteGros Ventre Area: trail to Cream Puff Peak, ca 0.5-2 air mi from trail head between Bear and Bull Creeks.-110.567343.313819512500Coniferous forests, open slopes, and meadows. Phenology: fruiting.RMRM625107 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.49946Ronald L. Hartman1994822234U.S.A.WyomingTeton[location and coordinates withheld]1829Along waterway and upslope. Phenology: fruiting.RM650703 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.52513Ronald L. Hartman Stuart Markow1995723204U.S.A.WyomingSubletteGros Ventre Area: ca 5 air mi NW of Bondurant.-110.469443.24232256Along river. Phenology: flowering.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.53917Ronald L. Hartman1995820232U.S.A.WyomingTetonGros Ventre Area: Flat Creek, 2-4 air mi NW of Flat Creek Ranch.20732195Open and wooded areas along stream or road. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11700Stuart Markow Heather Marks199885217U.S.A.WyomingTetonGrand Teton National Park: wildlife lookout and surrounding area, ca 1.5 air mi SW of Moose on Moose-Wilson Road, ca 13 air mi N of Jackson.1981Sagebrush-steppe on 40 deg. east-facing slope, dominated by Artemisia tridentata, Elymus spicatus, Artemisia dracunculus, Amelanchier alnifolia and Balsamorhiza sagittata.RM650702 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.53158Ronald L. Hartman1995725206U.S.A.WyomingTetonMount Leidy Highland Area: 2-4.5 air mi E of Black Rock Ranger Station.-110.306943.822421952378Mountain slope and roadside. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.53917Ronald L. Hartman1995820232U.S.A.WyomingTetonGros Ventre Area: Flat Creek, 2-4 air mi NW of Flat Creek Ranch.20732195Open and wooded areas along stream or road. Phenology: flowering & fruiting.RMRM960983 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.63506Ronald L. Hartman1998816228U.S.A.New MexicoColfaxNM Hwy 72, 13 road mi E of I-25 (milepost 13).-104.250636.91522484Grassy roadside. Phenology: flowering & fruiting.RMRM682110 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.232Michele Barlow199186218U.S.A.WyomingNatronaNorth Platte River Valley: east bank of North Platte River, ca 0.1 mi N of confluence of Bates Creek.-106.607842.70041597Shepherdia argentea shrub community parallel to main channel at edge of floodplain and on first terrace with understory of Poa pratensis, Agrostis stolonifera, and Cirsium arvense on cobbles and alluvium. Phenology: fruiting.RMRM703879 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.627Michele Barlow Steve Kettler1992818231U.S.A.WyomingJohnsonEastern Plains: Double Crossing Creek, ca 7 mi SE of Ucross.-106.432944.55571243Dense Hordeum jubatum meadow on silty-clay floodplain. Phenology: flowering.RMRM703599 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.930Steve Kettler199198251U.S.A.WyomingPlatteSoutheastern Plains: Dry Laramie River, ca 13.5 mi NW of Wheatland.-105.194642.12591469Salix exigua community with understory of Spartina pectinata, Panicum virgatum, Juncus torreyi, and Eleocharis along small meanders in broad stream valley. Soil mixed alluvium. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7630Emily A. Holt200184216U.S.A.ColoradoPitkinCentral Colorado: Sawatch Range, West Slope Continental Divide: along Forest Road 103 just E of end of pavement, ca 4 air mi N of Aspen.-106.832139.25542439Roadside with oak and Symphoricarpos woodlands. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3943Joy Handley2000520141U.S.A.IdahoAdamsPayette National Forest and Vicinity: Hells Canyon-Seven Devils Scenic Area: Kinney Creek Trail (Forest Service Trail 221), ca 9 air mi N of Bear; ca 24 air mi NW of New Meadows.-116.707945.14395181036Dry basalt canyon with creek. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4106Joy Handley2000523144U.S.A.IdahoAdamsPayette National Forest and Vicinity: Weiser River Valley: Mesa Road off U.S. Hwy 95, ca 8 air mi S of Council; ca 12 air mi ENE of Cambridge.-116.447744.6074899975Roadside grass and shrubland. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4189Joy Handley2000523144U.S.A.IdahoAdamsPayette National Forest and Vicinity: Weiser River Valley: along old U.S. Hwy 95 S of Fruitvale, ca 4.5-5.5 air mi N of Council; ca 14 air mi SSW of New Meadows.-116.421544.7956914Roadside grass and shrubland. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4285Joy Handley2000526147U.S.A.IdahoAdams[location and coordinates withheld]9451006Lakeside dominated by grass and Wyethia. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4396Joy Handley2000527148U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Hitt Mountains: area around open pit mine between heads of 4th of July and Dennett creeks, ca 16 air mi NW of Midvale; ca 18 air mi W of Cambridge.-117.04944.563915541737Steep, mostly southwest-facing hillside dominated by Elymus spicatus and Lupinus. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4423Joy Handley2000728210U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Buckwheat Flats Research Natural Area: along Sage Creek, ca 5 air mi SW of Midvale; ca 12 air mi SW of Cambridge.-116.842844.44689141036Steep canyon slopes dominated by Elymus spicatus and other grasses. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4551Joy Handley2000530151U.S.A.IdahoAdamsPayette National Forest and Vicinity: West Mountains: along the Weiser River just N of Evergreen, ca 7 air mi SW of New Meadows; ca 14 air mi W of McCall.-116.381644.897411581204Mixed conifer overstory on west-facing river bank and roadside. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4643Joy Handley200061153U.S.A.IdahoAdamsPayette National Forest and Vicinity: Hells Canyon-Seven Devils Scenic Area: along Forest Road 454 at Schoolmarm Gulch, ca 7 air mi N of Cuprum; ca 16 air mi NNE of Oxbow Dam.-116.707945.1874548640Roadside of steep canyon dominated by grasses and shrubs, especially Rhus. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4754Joy Handley200063155U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Hitt Mountains: Hixon Sharptail Preserve, Fairchild Reservoir, ca 8 air mi W of Midvale; ca 14 air mi SW of Cambridge.-116.902644.461311121173Open grass and shrubland, clay soil. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5075Joy Handley2000610162U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Weiser River Valley: along Keith Creek Road just W of Shoe Peg Valley, ca 5.5 air mi NW of Midvale; ca 8 air mi SW of Cambridge.-116.826344.52059451097Open grass and shrub dominated rangeland. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5251Joy Handley Denise L. Fairbanks2000611163U.S.A.IdahoAdamsPayette National Forest and Vicinity: Cuddy Mountains: Goodrich Creek Research Natural Area: along Goodrich Creek, ca 9 air mi SW of Council; ca 8 air mi NNE of Cambridge.-116.603744.67989451178Roadside riparian area in grass and shrub rangeland. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5631Joy Handley2000619171U.S.A.IdahoAdamsPayette National Forest and Vicinity: Weiser River Valley: just NE of Granger Butte, ca 7 air mi S of Indian Valley; ca 15 air mi SE of Cambridge.-116.423644.46131036Grass and shrub rangeland. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5794Joy Handley2000621173U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Weiser River Valley: along west bank of Weiser River, just S of Little Weiser River, ca 2 air mi SSW of Cambridge; ca 6 air mi NNE of Midvale.-116.684644.5494792Riverside and roadside in shrub and grass dominated canyon. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6099Joy Handley Phillip G. Lawrence2000627179U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Cuddy Mountains: Boundary Trail, just S of Grizzly Basin, ca 8 air mi N of Cambridge; ca 13 air mi W of Council. Also SE/14-116.684644.694312191432Mostly south-facing slopes along fence line with moist drainages. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6232Joy Handley Phillip G. Lawrence2000628180U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Weiser River Valley: Rush Creek Road, ca 4 air mi N of Cambridge; ca 14 air mi SW of Council.-116.684644.6218945Roadside in open shrub-grassland, basalt soil. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6325Joy Handley Phillip G. Lawrence2000629181U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Weiser River Valley: Deer Creek at powerline crossing, ca 5 mi W of Cambridge; ca 20 air mi SW of Council.-116.785844.5639899975Roadside and shrub-grassland. Phenology: vegetative only.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6738Joy Handley B. E. Nelson2000716198U.S.A.IdahoAdamsPayette National Forest and Vicinity: Weiser River Valley: along Middle Fork Weiser River Road, ca 6 air mi S of Council; ca 6 air mi N of Indian Valley.-116.421544.6363914945Roadside grassland and riparian area. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7480Joy Handley Erin Peters200081214U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Weiser River Valley: Burton Lane ditch just S of U.S. Hwy 95, ca 1 air mi SE of Cambridge; ca 16 air mi SW of Council.-116.664444.5639807Weedy roadside irrigation ditch. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.70188Ronald L. Hartman2000822235U.S.A.IdahoValleyPayette National Forest and Vicinity: Long Valley: Warren Wagon Road (Forest Hwy 21) on west side of Payette Lake at crossing of Horse Creek.-116.075844.98441524Roadside and wooded drainage. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2540Joy Handley Darren L. Pearson1999728209U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Hitt Mountains Area: near gravel pit off Forest Road 025, ca 14.5 air mi WNW of Midvale; ca 17 air mi WSW of Cambridge.-117.028744.534615851646Rocky basalt soil, moderately steep, mostly south-facing slope with Elymus spicatus, mixed shrubs and forbs, and Pyrrocoma radiata. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2613Nancy Kastning1989811223U.S.A.ColoradoGrandSierra Madre/Park Ranges: Park Range: ca 9.5 air mi WSW of Kremmling.25602621Sagebrush with occasional Douglas fir and juniper intermixed.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.17664B. E. Nelson Steven Nelson198983215U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: Routt National Forest: Along Service Creek ca 0.5-1.5 air mi above the Yampa River, ca 13.5 air mi S of Steamboat Springs.-106.782240.289521342317Along trail in aspen woods.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.17792B. E. Nelson Michelle Nelson198986218U.S.A.ColoradoRoutt[location and coordinates withheld]2317Parking lot and roadside.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2613Nancy Kastning Sunny and Joel Kastning1989811223U.S.A.ColoradoGrandSierra Madre\Park Range: Park Range: ca 9.5 air mi WSW of Kremmling.-106.552640.009625602621Sagebrush with occasional Douglas fir and juniper intermixed.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4767Neil Snow198983215U.S.A.ColoradoRoutt[location and coordinates withheld]21032530Parking area near trailhead.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5046Neil Snow198984216U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: along Forest Road 129 at junction of road leading around northwest part of Steamboat Lake.-106.967840.80892439Meadows surrounding small pond.RMRM608002 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3874Thomas Cramer1994815227U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Sublette Range: ca 18 air mi N of Cokeville.-110.931942.329422562286Ridgetop sagebrush and rocky outcrops. Phenology: flowering & fruiting.RMRM608001 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4572Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Twin Creek, ca 3.5 air mi W of Nugget.-110.895641.80781951Creek edges in ten foot deep creek cut through sagebrush surroundings. Phenology: fruiting.RMRM607998 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4669Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: ca 2 air mi E of Leefe.-110.992541.80781914Ditchsides and dry reservoir in surrounding sagebrush. Phenology: fruiting.RMRM607997 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4738Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Hams Fork, ca 2.5 air mi S of Kemmerer.-110.528641.75312088Riverside meadows, willows, and sagebrush. Phenology: flowering & fruiting.RMRM646159 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10097Thomas Cramer Jane T. Kellett1995730211U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Underwood Canyon, ca 8 air mi SE of Cokeville.-110.860142.000821952256Sagebrush hillside with some Prunus and Amelanchier. Phenology: flowering.RMRM311241 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3260E. O. Wooton Paul Standley1907722203U.S.A.New MexicoDona AnaMesilla Valley.-106.6373932.001891173Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4223Grace M. Kostel2004729211U.S.A.South DakotaCusterBuffalo Gap National Grassland and Vicinity: ca 8.5 air mi SE of Hermosa in Red Shirt Creek.-102.918543.7125868945In drainage of creek and steep slopes of drainage; soils are rock substrate with clayey silt. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4321Grace M. Kostel Steve Popovich200483216U.S.A.NebraskaSiouxOglala National Grassland and Vicinity: ca 13 -15 air mi NW of Crawford at Hudson-Meng Bison Bonebed Trail between Toadstool Geologic Park and Hudson-Meng Bonebed site.-103.600442.844111431250Along Hudson-Meng Bison Bonebed trail. Trail winds through creek bottom and over ridge tops. Soils range from heavy white clay in creek to rocky, gravelly areas on side slopes and at tops of deep cut draws. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4534Grace M. Kostel200488221U.S.A.NebraskaSiouxOglala National Grassland and Vicinity: ca 22-22.5 air miNW of Crawford and 1.5 mi W of Warbonnet Battlefield Monumen, Antelope Creek.-103.76366742.9158331097In creek. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4542Grace M. Kostel200488221U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: ca 30 air mi SE of Hot Springs and S of Forest Road 7043 in Blacktail Creek.-103.02983343.219333929In creek. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4543Grace M. Kostel200488221U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: ca 30 air mi SE of Hot Springs and S of Forest Road 7043 in Blacktail Creek.-103.02983343.219333929In creek. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4800Grace M. Kostel20031013286U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: ca 12-13 air mi SE of Limestone Butte.-103.01916743.0496671006In Elymus smithii rolling uplands of clay/loam soils. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9080Grace M. Kostel2005722203U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 2 air mi NE of Cactus Flats in Big Buffalo Creek.-101.8696543.85625750Wooded draw exclosed from grazing, soils are loam and loamy clay. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9192Grace M. Kostel2005722203U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 2 1/4 air mi WSW of Kadoka, Kadoka Lake.-101.552643.82715731On the shores near and around lake, soils are clay loam. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9277Grace M. Kostel2005723204U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 9 air mi SW of Kadoka.-101.66771743.774067711In prairie uplands with clay soil, old revegetated badlands floodplain. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9293Grace M. Kostel2005723204U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: near the White River, ca 9 air mi SW of Kadoka.-101.63806743.780167690In large deep cut stream channel emptying into the river, soils are clay. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9308Grace M. Kostel2005723204U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 2.5 air mi SSW of Kadoka.-101.53483343.7978731In vegetated clay soils of badlands floodplain. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9378Grace M. Kostel200585217U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: ca 6 air mi WSW of Edgemont.-103.94701743.2952831146In large reservoir with clay alkaline soils. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9394Grace M. Kostel200585217U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: ca 16 air mi SW of Edgemont.-104.02028343.1199331221In reservoir having clay alkaline soils. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9422Grace M. Kostel200585217U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: ca 12 air mi SSW of Edgemont.-103.90068343.1395171211In reservoir having clay alkaline soil. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9647Grace M. Kostel David Jones200588220U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 10.5 air mi WSW of Wall in Big Sage Creek.-102.4363543.942733742Soils are clay. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9669Grace M. Kostel David Jones200588220U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 10.5 air mi WSW of Wall in Big Sage Creek.-102.4363543.942733742Soils are clay. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9707Grace M. Kostel2005810222U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 1 air mi SW of Quinn adjacent to roadway of County Road CS12.-102.139143.9733792In streambed, soils are loamy clay. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9831Grace M. Kostel2005815227U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 16.5 air mi SW of Kadoka.-101.8302543.765067731In a deep-cut stream channel in badlands floodplain. Phenology: fruiting.RMRM940899 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.65683B. E. Nelson2005727208U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Rancho del Rio Grande Grant: along Rio Chiquito on Forest Road 437, ca 1.5 air mi W of Tombe; ca 4 air mi ESE of Ranchos de Taos.-105.539936.329722562286Canyon bottom. Phenology: flowering & fruiting.RMRM940903 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2849Jill E. Larson2005722203U.S.A.New MexicoTaosCarson National Forest and Vicinity: Devisidero Loop Trail from Taos Canyon to Devisidero Peak, ca 1 air mi E of Canyon.-105.546136.3823172530Pinyon/juniper woodland and south aspect slopes. Phenology: flowering.RMRM940902 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4090Jill E. Larson2005812224U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Canjilon Creek and gypsum cliffs, E of Echo Ampitheater recreational site on U.S. Hwy 84, ca 14 air mi NW of Abiquiu.-106.522436.358819962164Roadside along highway and parking lot. Phenology: flowering & fruiting.RMRM940901 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4628Jill E. Larson2005822234U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Jicarilla Ranger District: Arroyo La Jara near west forest boundary, just S of U.S. Hwy 64, WSW of Dulce.-107.302836.709920032057Arroyo floodplain and flats with Artemisia tridentata and chamisa. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4671Jill E. Larson2005822234U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Jicarilla Ranger District: Forest Road 309, Laguna Seca Mesa near Cabresto Electronic Site, W of Dulce.-107.352336.858320212082Gas pad site. Phenology: flowering & fruiting.RMRM940900 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4701Jill E. Larson2005822234U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Jicarilla Ranger District: Eul Point on Carracas Mesa via Forest Road 218/2182, 0.5 air mi S of state line, W of Dulce.-107.353436.992922252301Gas pad site with wild horse salt block. Phenology: flowering & fruiting.RMRM940898 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.81404Ronald L. Hartman2005725206U.S.A.New MexicoTaosCarson National Forest and Vicinity: NM Hwy 515 from NM Hwy 522 to Red River State Fish Hatchery, follow powerline ca 0.5 air mi down creek until intercept with Hatchery Road on back up the road.-105.639136.669821952286Pinyon/juniper. Phenology: fruiting.RMRM940897 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.81551Ronald L. Hartman2005728209U.S.A.New MexicoTaosCarson National Forest and Vicinity: north-northeast slope and summit of Cerro Montoso.-105.754636.702823172638Pinyon/juniper with some ponderosa pine. Phenology: flowering.RMRM950249 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.69441B. E. Nelson200688220U.S.A.New MexicoMoraCarson National Forest and Vicinity: Santa Fe Mountains: along NM Hwy 518 from forest boundary SW ca 3/4 mi, above Vigil Canyon, ca 9.5 air mi NW of Mora.-105.440136.079727922841Roadside and adjacent shale roadcut. Phenology: flowering.RMRM950263 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10603Jill E. Larson2006819231U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: San Cristobal Canyon Trailhead and along trail in canyon, ca 3 air mi NE of San Cristobal; ca 2 air mi SSE of Lama.-105.608836.619624872865Old road bed near creek and riparian area lined with Alnus tenuifolia. Phenology: flowering.RMRM950262 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10749Jill E. Larson2006820232U.S.A.New MexicoTaosCarson National Forest and Vicinity: southern border of 1996 Hondo Fire N of San Cristobal Canyon, just NE of San Cristobal Canyon Trailhead, ca 3 air mi NE of San Cristobal; ca 2 air mi SE of Lama.-105.607436.618125602591Along edge of burned area of pinyon/juniper woodland and north-facing slope with Quercus gambelii and Bromus carinatus. Phenology: flowering & fruiting.RMRM950250 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11009Jill E. Larson2006823235U.S.A.New MexicoTaosCarson National Forest and Vicinity: Picuris Pueblo Indian Reservation: southwest corner of Reservation, ca 0.5 air mi W of Chamisal in thinning treatment area.-105.748336.163622402271Moist area where arroyo runs into culvert under road; disturbed area near road. Phenology: flowering.RMRM950256 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5162Jill E. Larson Reynaldo Lucero2006526146U.S.A.New MexicoTaosCarson National Forest and Vicinity: Pueblo de Taos Indian Reservation: southwest area of 2003 Encebado burn, ca 2 air mi SSW of Taos Pueblo.-105.527836.418723782469Burned pinyon/juniper woodland slopes with resprouting Querus gambelli and Cercocarpus montanus and rosettes of Lactuca serriola. Phenology: vegetative only.RMRM950255 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5412Jill E. Larson Nate2006530150U.S.A.New MexicoTaosCarson National Forest and Vicinity: Pueblo de Taos Indian Reservation: along south boundary with National Forest and edge of Encebado 2003 burn area, W of Ranchos Peak, ca 4 air mi E of Town of Taos.-105.497636.40228042926Burned mixed conifer forest with Populus tremuloides saplings and Iliamna grandiflora. Phenology: vegetative only.RMRM950254 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5475Jill E. Larson Nate2006530150U.S.A.New MexicoTaosCarson National Forest and Vicinity: Pueblo de Taos Indian Reservation: along south boundary with National Forest and edge of Encebado 2003 burn area, Palo Encebado Peak and surrounding area, ca 5 air mi E of Town of Taos.-105.466236.40328653079Burned mixed conifer forest; most trees are standing dead, with some areas of surface fire and live trees with char heights less than ca 1 meter; understory of Taraxacum officinale and Pseudostellaria. Phenology: vegetative only.RMRM950253 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5843Jill E. Larson James Lucero200665156U.S.A.New MexicoTaosCarson National Forest and Vicinity: Pueblo de Taos Indian Reservation: along Rio Pueblo de Taos and drainage E of Encebado Canyon in Encebado burn area, ca 5 air mi E of Taos Pueblo.-105.485636.443123012003 burn area with Quercus gambelii, Rosa woodsii, Lactuca serriola; formerly mixed conifer riparian area and ponderosa pine forest. Phenology: vegetative only.RMRM950252 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6673Jill E. Larson James Lucero2006615166U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Pueblo de Taos Indian Reservation: pasture area W of road to Pueblo, ca 0.5 mi W of Taos Pueblo.-105.554336.43552149Open grassland/wetland with Carex lanuginosa, Equisetum laevigatum, Juncus balticus and groups of Salix and Typha in the moistest areas. Phenology: vegetative only.RMRM950251 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9628Jill E. Larson2006730211U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Pine Canyon 2005 burn area on Forest Road 137, ca 5 air mi W of El Rito.-106.273536.33723932469Recently burned pinyon/juniper woodland. Phenology: flowering & fruiting.RMRM950265 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9667Jill E. Larson2006728209U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Gallegos Canyon Trail 4, on north side of NM Hwy 518, ca 0.5 air mi NW of Sipapu, ca 3 air mi NW of Tres Ritos.-105.556336.159825302560Mixed conifer forest with Pinus ponderosa, Pseudotsuga menziesii and areas near trail head. Phenology: flowering & fruiting.RMRM950264 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9987Jill E. Larson200689221U.S.A.New MexicoColfaxCarson National Forest and Vicinity: Cimarron Range: Colin Neblett State Wildlife Area: along Maverick Creek from U.S. Hwy 64, ca 0.5 air mi NE of Gravel Pit Lakes, ca 7 air mi E of Eagle Nest, ca 1.5 air mi W of Ute Park at area boundary.-105.130736.549823322378Pinyon/juniper woodland with mixed conifers in drainage areas; old roads with Melilotus officinalis. Phenology: flowering.RMRM950248 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.83184Ronald L. Hartman2006813225U.S.A.New MexicoTaos[location and coordinates withheld]24262439Canyon slopes and bottom. Phenology: flowering & fruiting.RMRM950247 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.83406Ronald L. Hartman2006815227U.S.A.New MexicoTaosCarson National Forest and Vicinity: Arroyo Aquaje de la Petaca.-105.964836.69272469Arroyo bottom by collapsed bridge. Phenology: flowering & fruiting.RMRM950246 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.83625Ronald L. Hartman2006821233U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: NM Hwy 518 along Rio Grande del Rancho, 0.5 mi S of Forest Service boundary.-105.585236.32432164Roadside and creek margin. Phenology: flowering & fruiting.RMRM950245 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.83646Ronald L. Hartman2006821233U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: along Rio Grande del Rancho 2 mi S of Forest Service boundary on NM Hwy 518.-105.581236.3022207Roadside and stream margin. Phenology: flowering & fruiting.RMRM802170 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.52398B. E. Nelson Luanne Lum200167158U.S.A.WyomingHot SpringsBighorn Basin: above the head of Buffalo Springs Creek on a tributary of Nowater Creek, ca 3 air mi N of Hawks Butte, ca 18 air mi SW of Big Trails; ca 32 air mi E of Thermopolis.-107.605143.610516151750Steep, nearly barren clay slopes. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1146Luanne Lum200189221U.S.A.WyomingBig HornBig Horn Mountains: along Cold Springs Road, ca 8 air mi NE of Hyattville and ca 32 air mi NE of Worland.-107.455244.335521952256Juniper and Pinus with sagebrush on sandy soil with rocks. Phenology: flowering & fruiting.RMRM933582 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57436B. E. Nelson2002714195U.S.A.WyomingWashakieBighorn Basin: ridge leading NW off Lightning Ridge on the Nowater Trail or BLM Road 1404, ca 10 air mi SW of Big Trails; ca 36 air mi SE of Worland.-107.460443.650317431774Low sand dune. Phenology: fruiting.RMRM933586 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57485B. E. Nelson2002714195U.S.A.WyomingWashakieBighorn Basin: along Buffalo Springs Creek at Nowater Trail or BLM Road 1404, ca 11 air mi SW of Big Trails; ca 32 air mi SE of Worland.-107.524943.71151518Flats along the stream channel. Phenology: flowering & fruiting.RMRM933581 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57607B. E. Nelson2002716197U.S.A.WyomingWashakie[location and coordinates withheld]1378Low, clay flats in an exclosure with several Russian olive trees and cottonwoods. Phenology: flowering & fruiting.RMRM933580 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57625B. E. Nelson2002718199U.S.A.WyomingBig HornBighorn Basin: Montgomery Draw Wetland Protection Project ca 1.5 air mi N of Fivemile Creek, ca 7 air mi SW of Manderson; ca 11.5 air mi S of Basin.-108.07744.21941295Dry reservoir area and areas below the dam. Phenology: flowering.RMRM933579 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57759B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: Chimney Reservoir between Chimney Springs Draw and Fiscus Gulch, ca 3 air mi SE of Castle Gardents, ca 6 air mi S of Ten Sleep.-107.471943.9381475Dry reservoir bed. Phenology: flowering & fruiting.RMRM933578 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57837B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: just E of Blue Bank or BLM Road 1411 and ca 0.5 air mi W of Bud Kimball Creek, ca 2 air mi NE of Middle Butte, ca 11.5 air mi SSW of Ten Sleep.-107.532243.88011481Dry reservoir bed. Phenology: flowering & fruiting.RMRM933577 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57855B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: Green Bug Reservoir area on Little Cottonwood Creek, ca 2 air mi WSW of Castle Gardens, ca 7.5 air mi SW of Ten Sleep.-107.552243.95241481Drainage channel through old reservoir bed. Phenology: flowering & fruiting.RMRM933576 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.57925B. E. Nelson2002723204U.S.A.WyomingWashakieBighorn Basin: along Lower and Upper Hanover canals at the end of Lane 7, ca 7.5-8 air mi NNE of Worland.-107.878144.117112311250Disturbed flats with Siberian elm, Russian olive, cottonwood, and shrubs. Phenology: flowering & fruiting.RMRM933588 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4802Luanne Lum Michelle Wilson2002723204U.S.A.WyomingParkBighorn Basin: along County Road-108.628444.907512951298Reservoir. Phenology: flowering & fruiting.RMRM933585 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4857Luanne Lum Michelle Wilson2002723204U.S.A.WyomingParkBighorn Basin: along Shoshone River W of Willwood Dam and County Road-108.905844.67313441371Riparian. Phenology: flowering & fruiting.RMRM933584 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5487Luanne Lum200288220U.S.A.WyomingParkBighorn Basin: along County Road 3FK at South Fork Dry Creek, ca 16 air mi SSE of Cody.-108.904144.320716501676Grassland. Phenology: flowering & fruiting.RMRM933583 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5836Luanne Lum2002816228U.S.A.WyomingHot SpringsBighorn Basin: along Grass Creek and Wyo Hwy 171, ca 25 air mi NW of Thermopolis.-108.5243.924615731577Riparian. Phenology: fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7195Margarette J. Lyon1994811223U.S.A.ColoradoSan MiguelSan Miguel and Lower Dolores River Drainages: Uncompahgre National Forest: Naturita Ridge.-108.620538.16782073North-facing slopes with pinyon, juniper, oak, mountain mahogany, and serviceberry. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7278Margarette J. Lyon1994812224U.S.A.ColoradoMesaSan Miguel and Lower Dolores River Drainages: Unaweep Canyon along West Creek.-108.893838.71851615Riparian area with Populus and Salix exigua. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7367Margarette J. Lyon1994815227U.S.A.ColoradoMesaSan Miguel and Lower Dolores River Drainages: Sinbad Valley: along headwaters of Salt Creek.-108.93338.52491829Riparian area with ponderosa pine, oak, and Salix exigua. Phenology: flowering & fruiting.RMUSFS843409 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4398Rob Massatti200593246U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: less than 1 mi E Bruce's Parking lot, ca 7 air mi SW of Lander.-108.854942.72972079Trailside. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2683Melanie Arnett199887219U.S.A.ColoradoGunnisonSouthern Gunnison Basin: along south side of U.S. Hwy 50, just S of the cemetary, ca 1.6 road mi E of downtown Gunnison.-106.884238.5362347Roadside. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2684Melanie Arnett199887219U.S.A.ColoradoGunnisonSouthern Gunnison Basin: along south side of U.S. Hwy 50, just S of the cemetary, ca 1.6 road mi E of downtown Gunnison.-106.884238.5362347Roadside. Phenology: flowering & fruiting.RMRM747794 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5753Melanie Arnett1999728209U.S.A.ColoradoSaguacheSouthern Gunnison Basin: ca 0.1 road mi W of Colo Hwy 114 on BLM Road 3074, ca 3.6 air mi ESE of Cooper Mountain; ca 4.9 air mi NW of Razor Creek Dome.-106.772638.361525572564Spring and roadside in deep sagebrush ravine. Phenology: flowering & fruiting.RM650701 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.53917Ronald L. Hartman1995820232U.S.A.WyomingTetonGros Ventre Area: Flat Creek, 2-4 air mi NW of Flat Creek Ranch.-110.596443.547620732195Open and wooded areas along stream or road. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9091Lynn Marie Moore Marie Rambo1996912256U.S.A.ColoradoMontezuma[location and coordinates withheld]19812073Pinyon-juniper slopes in canyon, riparian area along river, and disturbed area on west side of river. Phenology: flowering & fruiting.RMRM160496 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.Marcus E. Jones1929930273U.S.A.ArizonaCochiseHuachuca Mountains; Ramsey Canyon.-110.315631.445191707Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2180Rachel Newton2005720201U.S.A.WyomingLincolnWetlands and Adjacent Areas: Smiths Fork, ca 18 air mi NNE of Cokeville.-110.874142.34532094Moist banks and flood plains. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3231Rachel Newton200587219U.S.A.WyomingLincolnWetlands and Adjacent Areas: Hams Fork, ca 8 air mi NW of Kemmerer.-110.613641.88052113Moist banks and flood plains. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3266Rachel Newton200587219U.S.A.WyomingLincolnWetlands and Adjacent Areas: Hams Fork, ca 11 air mi NW of Kemmerer.-110.639641.92922162Dry uplands. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6498Rachel Newton2006729210U.S.A.WyomingWestonWetlands and Adjacent Areas: seeping spring, ca 7 air mi NE of Newcastle.-104.0788443.890991473Moist ground around seepage. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6740Rachel Newton James Pray200688220U.S.A.WyomingTetonWetlands and Adjacent Areas: Snake River, ca 4 air mi NW of Jackson.-110.8406943.500821871Rocky disturbed uplands Phenology: flowering & fruiting.RMUSFS480331 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.17Ross Mersereau1968910254U.S.A.OregonLaneWillamette National Forest: in WS 1 clearcut unit, H.J. Andrews Experiment Forest.-122.232144.2072838Common on 30% SW in Limberlost stony loam with invading herbs and shrubs, Epilobium paniculatum, and Senecio sylvaticus. Phenology: flowering & fruiting.RMUSFS480336 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.202Charles E. Poulton J. Clifton Windl193784216U.S.A.WashingtonKittitasSnoqualmie National Forest (KRS).-121.120946.9932762Common on 1% S in sandy loam, rocky along roads and on dry sites. Phenology: flowering & fruiting.RMUSFS480310 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6131Clinton M. MangumU.S.A.IdahoWeiser National Forest.Phenology: flowering & fruiting.RMUSFS480338 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.38D. P. Berghuis1938717198U.S.A.OregonGrantMalheur National Forest: Logan Valley Reseeding Project.-118.518144.16331541Common on 0 in rocky, gravelly on low ground with Gayophytum, knotweed, cheat, etc. Phenology: flowering & fruiting.RMRM356808 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3087Dorothy Naas Ralph Naas1975716197U.S.A.OregonUnionStarkey National Forest: Range Experiment Station: Starkey Headquarters, 3 3/4 mi NNW.-118.539445.27531189Scarce on open roadside. Phenology: flowering & fruiting.RMUSFS480337 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.B641Douglas C. Ingram1916914258U.S.A.OregonCrookOchoco National Forest: Barney Grade, Mill Creek.1143Rare on S in dry, rocky clay loam. Phenology: flowering & fruiting.RMUSFS480334 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.H-65Douglas Hole193598251U.S.A.WashingtonChelanWenatchee National Forest: Sunitch Canon.-120.678147.5031548General distribution on bottom in moist loam. Phenology: flowering & fruiting.RMRM260902 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.Ed Bradley1940101275U.S.A.IdahoBannockPocatello: ISC campus.-112.433342.8669Damp soil. Phenology: flowering & fruiting.RMRM355025 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.892Ellen Collins198389221U.S.A.MontanaBig HornSlopes above Fort Smith near substation.-107.938445.31061067Tall grass prairie. Phenology: flowering & fruiting.RMRM355130 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.906Ellen Collins1983811223U.S.A.MontanaCarbonLockheart Ranch.-108.24145.13861280Cottonwood bottom. Phenology: flowering & fruiting.RMRM611059 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.26162Erwin F. Evert1993724205U.S.A.IdahoMadisonTarghee National Forest: Big Hole Mountains: along the N side of Forest Road 219, ca 1.5 mi N of Graham Spring, ca 16 mi WNW of Driggs.-111.413643.6732195Rocky shrubland with Purshia tridentata, Symphoricarpos oreophilus, Astragalus convallarius, and Agropyron spicatum. Phenology: flowering & fruiting.RMRM610899 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.26382Erwin F. Evert199381213U.S.A.MontanaMadisonMadison River Valley: West Fork Rest Area along west side of U.S. Highway 287: just E of the Madison River, ca 22 mi S of Cameron.-111.589144.90431814Disturbed and mowed areas above river with Bromus inermis, Sisymbrium altissiumum, Matricaria matricarioides, and Alyssum desertorum. Phenology: flowering & fruiting.RMRM359482 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1416Gary I. Baird1984814227U.S.A.WashingtonBentonHanford Works (DOE), Columbia River shoreline N of 100-D area.-119.525746.7015120Riparian, Hanford Form. (Pasco gravels), river cobble with moist sandy areas. Phenology: flowering & fruiting.RMUSFS480325 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.225James C. Whitham1945825237U.S.A.MontanaLincolnKootenai National Forest: Pioneer Park at Libby.-115.547548.3779640Common on level in dry clay loam along roadsides. Phenology: flowering & fruiting.RMRM71775 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.739J. Francis Macbride1910910253U.S.A.IdahoPayetteNew Plymouth.-116.81943.9699670Phenology: flowering & fruiting.RMUSFS480321 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.39James L. Jacobs193179190U.S.A.IdahoCusterLemhi National Forest: near Marcrofts field.-113.704243.64071981Rare on 5 degree SE in shallow gravelly loam with Artemisia, Sophia, and Polygonum along ditch banks. Phenology: flowering & fruiting.RMUSFS480327 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.JES-208Jack E. Schmautz1957814226U.S.A.IdahoClarkOff forests (USSES): Intermountain Range Experiment Station; station headquarters.1661Grows in loam. Phenology: flowering & fruiting.RMUSFS480326 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1425James C. Whitham193393246U.S.A.MontanaGallatinGallatin National Forest: Gallatin Canon at Hellroaring Creek.-111.231645.43941768On 10% N in gravelly loam at Mt. Meadows. Common. Phenology: flowering & fruiting.RMRM66536 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1600John B. Leiberg1895825237U.S.A.MontanaSandersCoeur d'Alene Mountains: near Horse Plains.-116.00147.7499650Phenology: flowering & fruiting.RMRM72091 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.261June A. ClarkU.S.A.IdahoAdaBoise.-116.203443.6135878Waste ground. Phenology: flowering & fruiting.RMUSFS480264 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.209Karl L. Mann19169245U.S.A.IdahoAdamsWeiser National Forest: Mann Creek.-116.676345.09469141524Grows on S and SW with bunch grass. Phenology: flowering & fruiting.RMUSFS480323 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.120Kenneth C. Pearse1932724206U.S.A.IdahoElmoreBoise National Forest (INT.): Long Gulch 1/4 mi above Ranger Station.-115.70243.53911402Common in coarse granitic with Bromus tectorum and balsamroot on an overgrazed flat. Phenology: flowering & fruiting.RMUSFS480311 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.111Lee O. Miles1914715196U.S.A.IdahoBoisePayette National Forest: Garden Valley Ranger Station.-115.919344.0616960Grows on flat in thin sandy loam with Geranium, mullen, yellow cogswell, and yarrow. Phenology: flowering & fruiting.RMRM330730 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1061P. A. Robertson1975716197U.S.A.MontanaCarbonOn the road to the quarry E of Warren.-108.658545.061341Phenology: flowering & fruiting.RMUSFS480339 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.R-233Ray Ward1932718200U.S.A.WashingtonFerryColville National Forest: in town of Republic.-118.737848.6482792Very abundant in dark soil all over. Phenology: flowering & fruiting.RMUSFS480331 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.17Ross Mersereau1968910254U.S.A.OregonLaneWillamette National Forest: in WS 1 clearcut unit, H.J. Andrews Experiment Forest.-122.232144.2072838Common on 30% SW in Limberlost stony loam with invading herbs and shrubs, Epilobium paniculatum, and Senecio sylvaticus. Phenology: flowering & fruiting.RMUSFS480330 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.17Ross Mersereau1968910254U.S.A.OregonLaneWillamette National Forest: in WS 1 clearcut unit, H.J. Andrews Experiment Forest.-122.232144.2072838Common on 30% SW in Limberlost stony loam with invading herbs and shrubs, Epilobium paniculatum and Senecio sylvaticus. Phenology: flowering & fruiting.RMRM652155 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10400Stuart Markow199286219U.S.A.IdahoClarkTarghee National Forest: Western Contennial Mountains: above head of Pleasant Valley Creek, ca 8.5 air mi NW of Spencer.-112.331244.424623172439Open slope with mostly Artemisia, grasses, and scattered forbs. Phenology: flowering & fruiting.RMRM652153 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10789Stuart Markow1992817230U.S.A.IdahoFremontTarghee National Forest: Henrys Lake Mouuntains: along Twin Creek, ca 10 air mi SW of West Yellowstone.-111.306344.612720122073Coniferous forest dominated by Pseudotsuga menziesii and Symphoricarpos. Phenology: flowering & fruiting.RMRM652157 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5751Stuart Markow1991813225U.S.A.IdahoFremontTarghee National Forest: Porcupine Creek Campground and surrounding area.-111.224144.09316761737Coniferous forest dominated by Pinus contorta, with openings and adjacent roadside, and some riparian. Phenology: flowering & fruiting.RMRM653002 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5880Stuart Markow1991815227U.S.A.IdahoTetonTarghee National Forest: West Slope Teton Range: Pinochle Rd, 0.5 mi E of entrance to National Forest.-111.089743.904720122103Coniferous forest dominated by Pinus contorta, Pseudotsuage menziesii, and Prunus virginiana. Phenology: flowering & fruiting.RMUSFS480335 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8W. E. Anderson1927710191U.S.A.WashingtonKittitasWenatchee National Forest: along Blewett Hwy., Liberty Ranger Station.-120.694847.2473731Scarce on bottoms with moderate S in gravel with Mullen and dandelion. Phenology: flowering & fruiting.RMUSFS480266 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.16W. N. Sparhawk1915725206U.S.A.IdahoPayette National Forest: Gallagher Flat.1036Grows on flat to steep SandE or W in rather dry gravelly with Brome, alfalfa, Ballsamorrhipa, and choke cherry. Phenology: flowering & fruiting.RMRM72461 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3326oWilliam C. Cusick1908910254U.S.A.OregonCommon on R. R. right of way in moist, rich soil. Phenology: flowering & fruiting.RMRM766713 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2569Sarah Nunn2001713194U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: Round Mountain Trail off U.S. Hwy 34, ca 7 air mi W of Loveland.-105.2840.417219201981Steep, dry north facing slopes, with Ribes, Opuntia and ponderosa pine; some slopes with talus. Phenology: flowering.RMRM260143 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8006C. L. Porter Marjorie W. Porter195986218U.S.A.WyomingPlatteWheatland.-104.953242.05441463Common weed of cultivated areas. Phenology: flowering & fruiting.RMRM806973 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3473Brian Reif200288220U.S.A.New MexicoSanta FeSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Rio Frijoles Trail 154 just E of Santo Domingo de Cundiyo Land Grant, 8 air mi SE of Chimayo. SE in canyon along trail for 0.2 air mi from E edge of land grant.-105.873335.9379672134Riparian of river, and meadows, in canyon bottom with mixed conifer slopes. Canyon tightening upstream with encroachment of granitic cliffs. Phenology: fruiting.RMRM806994 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.76006Ronald L. Hartman2002718199U.S.A.New MexicoRio ArribaSanta Fe National Forest and Vicinity: Jemez Mountains: Canyon Madera, first mile from road.-106.21763336.1747831815Sandy slopes and stream bottom. Phenology: flowering & fruiting.RMRM806993 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.76364Ronald L. Hartman2002813225U.S.A.New MexicoRio ArribaSanta Fe National Forest and Vicinity:Jemez Mountains: 14 air mi NNE of Espanola on U.S. Hwy 285.-106.04713336.2127831857Roadside. Phenology: flowering & fruiting.RMRM806972 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9241Brian Reif2003829241U.S.A.New MexicoMora[location and coordinates withheld]2347Roadside in meadow bottom including lower, south-facing slope of Gambels oak/ pinyon pine, and riparian at creek crossing; ponderosa pine forest. Phenology: fruiting.RMRM806971 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9473Brian Reif200393246U.S.A.New MexicoLos Alamos[location and coordinates withheld]1920Roadside and canyon bottom on tuft/volcanics in ponderosa pine forest. Phenology: fruiting.RMRM804777 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.61494B. E. Nelson2004711193U.S.A.New MexicoSan MiguelSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Anton Chico Grant: vicinity of a tributary of Arroyo Leguino, ca 1.3 air mi E of La Mesita, ca 20.5 air mi S of Las Vegas.-105.240135.295617221750Swale in juniper/grassland. Phenology: flowering.RMRM804779 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10059Brian Reif200486219U.S.A.New MexicoSan MiguelSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Anton Chico Grant: 5 air mi ENE of Villanueva. N35.2365 W105.2558 to NE 0.5 air mi along Pecos River.-105.255835.23651676River bottom, mostly juniper with Russian olive and narrowleaf cottonwood. Phenology: flowering & fruiting.RMRM804778 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10161Brian Reif200487220U.S.A.New MexicoSan MiguelSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: 0.2 air mi S of Pablo Creek at forest boundary, 12 air mi WSW of Las Vegas.-105.405235.53652128Grassy north-facing, meadow slope in scattered ponderosa pine. Phenology: flowering.RMRM397240 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.103Alan T. Carpenter1982728209U.S.A.WyomingLincolnGreen River Basin: near Elkol, 6 air mi SW of Kemmerer.-110.645541.7315Common on east-facing slopes. Phenology: flowering & fruiting.RMRM7696 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2755Aven Nelson1896827240U.S.A.WyomingCarbonPlatte Canyon.-106.78542.4755Phenology: flowering & fruiting.RMRM36928 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8497Aven Nelson1901726207U.S.A.WyomingSheridanBig Horn.-106.992344.6833Phenology: flowering & fruiting.RMRM7695 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.Aven Nelson1896714196U.S.A.WyomingSheridanSheridan.-106.756244.7972Phenology: vegetative only.RMRM357328 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4661Erwin F. Evert198286218U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: along U.S. Hwy 14, 16, and 20, ca 1/4 mi E of Clocktower Creek.-109.56344.46181798On road shoulder. Phenology: flowering & fruiting.RMRM268601 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.331Francis X. Jozwik1962821233U.S.A.WyomingNatronaCasper Mountain Area: near the junction of Gothmore Loop and the Garden Creek Falls Road.-106.308542.80651920Dry road bank. Phenology: flowering & fruiting.RMRM293221 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1958Gary J. Pierce1973713194U.S.A.WyomingCampbellGillette.-105.502244.29111371Locally abundant in gravel soil on a weedy roadside. 2 of 2 Phenology: vegetative only.RMRM293222 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1958Gary J. Pierce1973713194U.S.A.WyomingCampbellGillette.-105.502244.29111371Locally abundant in gravel soil on a weedy roadside. 1 of 2 Phenology: flowering.RMRM392343 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.S-57-286Harold F. Eppson C. S. Gilbert1957919262U.S.A.WyomingJohnsonAlong U.S. Hwy 87, ca 3 mi N of Buffalo.-106.710544.3947Phenology: flowering & fruiting.RMRM543865 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.170Jan Pollet1989716197U.S.A.WyomingPlatteAlong Cottonwood Creek, 30 road mi NW of Wheatland.-105.17542.29791616Hay meadow, irrigated when water in creek Phenology: flowering & fruiting.RMRM543863 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.278Jan Pollet1989725206U.S.A.WyomingPlatteCottonwood Creek, 29 road mi NW of Wheatland.-105.214142.29791616Creek banks, live water. Phenology: flowering & fruiting.RMRM544473 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.458Jan Pollet1989814226U.S.A.WyomingPlatteCottonwood Creek, 32 road mi NW of Wheatland.-105.214142.29791616Creek bank, dry. Phenology: flowering & fruiting.RMRM544474 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.536Jan Pollet1989823235U.S.A.WyomingPlatteAlong Brush Creek, 17 road mi E of Wheatland.-105.108141.83451737Creek banks, dry, some standing water. Phenology: flowering & fruiting.RMRM544035 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.594Jan Pollet1989826238U.S.A.WyomingPlatteAlong west bank of Glendo Reservoir, 3 road mi E of Glendo.-105.000742.51461437Bank of reservoir, below dam. Phenology: flowering & fruiting.RMRM544475 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.701Jan Pollet198991244U.S.A.WyomingPlatteGuernsey Reservoir, east shore, 6 road mi NW of Guernsey.-104.783442.32661323Phenology: flowering & fruiting.RMRM544472 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.733Jan Pollet198993246U.S.A.WyomingPlatteBetween Fish Creek and Fish Creek Road, 18 road mi NW of Wheatland.-105.057542.22621447Stock ponds and drainage of ponds. Phenology: flowering & fruiting.RMRM543864 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.808Jan Pollet198998251U.S.A.WyomingPlatteDeadhead Creek, 6 road mi E of Wyo Hwy 34, 12 road mi SW of Wheatland.-105.166241.83451550Creek banks and creek bed. Phenology: flowering & fruiting.RMRM616242 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.381Jeb Schenk1991726207U.S.A.WyomingTeton-110.755743.47561902In alleyway behind building. Phenology: flowering & fruiting.RMRM211710 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2554John F. Reed Mildred S. Reed194898252U.S.A.WyomingTetonJackson Hole Wildlife Park: Snake River, near Moran.-110.584743.85822057Bank of river in gravel moraine. Phenology: flowering & fruiting.RMRM214727 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2690John F. Reed Mildred S. Reed1949826238U.S.A.WyomingTetonJackson Hole Wildlife Park.-110.733243.57422057Gravel pit. Phenology: flowering & fruiting.RMRM730813 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.103Patricia P. Douglas Nancy E. Hastings199774185U.S.A.WyomingSheridanSheridan Training Area: ca 1 km W of Peak 4244 (338560, 4469020), 2 km NE of Peak 4290.1300Scattered in Artemisia grassland on east/west running ridge with slopes of 0-30 deg on north and south sides, sandy loam to loam, soil series Renohill-Worfka association, with Artemisia tridentata, A. cana, Stipa comata, and Aristida purpurea. Phenology: flowering.RMRM730812 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.202Patricia P. Douglas N. E. Hastings199776187U.S.A.WyomingSheridanSheridan Training Area: naturally eroded hillside, ca 0.6 km NW of Peak 4244, Peak 4290.1230Scattered in grassland on northwest-facing slope (30 deg) in silty clay loam, soil series Worfka-Shingle-Samday complex, with Elymus smithii, Heterotheca villosa, Bromus tectorum, Stipa viridula, and Poa sp. Phenology: flowering.RMRM730814 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.298Patricia P. Douglas N. E. Hastings1997829241U.S.A.WyomingSheridanSheridan Training Area: drainage ca 0.8 km ESE of Peak 4263, ca 0.8 km W of Peak 4152. To 339140 4967800.1230Scattered in Artemisia grassland with scattered Symphoricarpos on level to 15 deg slope of silty loam, soil series Shingle-Haverdad association and Worfka-Shingle-Samday complex, with Artemisia tridentata, A frigida, A, cana, Symphoricarpos occidentalis Phenology: flowering & fruiting.RMRM726921 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.416Patricia P. Douglas B. E. Nelson, R. M. Smith, N. E. Hastings1995821233U.S.A.WyomingPlatteCamp Guernsey: near Warm Springs.1359Level floodplain in sand with Artemisia, Bromus, Calamovilfa, Euphorbia, and Populus spp. Phenology: flowering & fruiting.RMRM329092 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3670Robert D. Dorn1980831244U.S.A.WyomingLaramie3 mi W of Cheyenne.-104.897941.14781890Disturbed area with Kochia, Salsola. Phenology: flowering & fruiting.RMRM197374 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.Robert E. Pfadt19441010284U.S.A.WyomingConverseDouglas.-105.382242.7597Phenology: flowering & fruiting.RMRM282124 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.319Robert L. Tresler1966715196U.S.A.WyomingNatronaCasper.-106.313142.8666In a garden. Phenology: flowering & fruiting.RMRM300854 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.104Robert Luce1976920264U.S.A.WyomingGoshenS of Springer Reservoir.-104.27841.87981280Phenology: flowering & fruiting.RMRM315796 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1299Robert W. Lichvar1977821233U.S.A.WyomingTetonGros Ventre Mountains: Gros Ventre River.-110.596443.6342103Frequent in open area near water, with Eleocharis macrostachya and Juncus sp.. Phenology: flowering & fruiting.RMRM315535 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.882Robert W. Lichvar1977713194U.S.A.WyomingTetonGros Ventre Mountains: Sheep Mountain.-110.575543.57142439Infrequent in open area, with Poa sp. and Juncus sp.. Phenology: flowering.RMRM77933 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.401Seymour S. Sharp1913824236U.S.A.WyomingSheridanSheridan.-106.756244.79721143Waste ground. Phenology: flowering & fruiting.RMRM78182 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.401Seymour S. Sharp1913824236U.S.A.WyomingSheridanSheridan.-106.756244.79721143Waste ground. Phenology: flowering & fruiting.RMRM69154 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.601Vie Willits1910720201U.S.A.WyomingSheridanHanna Creek.-106.991744.6719Cultivated field. Phenology: flowering & fruiting.RMRM580018 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.13278Walter Fertig199288221U.S.A.WyomingLincolnWest Slope Salt River Range: Strawberry Creek, ca 2.5 air mi E of Bedford; ca 12 air mi NNE of Afton.-110.53942.887722562317Steep, north-facing ridge on south shore of creek on loose lime-stone/shale talus. Phenology: flowering & fruiting.RMRM603115 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.14445Walter Fertig Jane Struttmann1993817229U.S.A.WyomingAlbanyLaramie Range: Sybille Canyon, adjacent to Wyo Hwy 34 at Sybille Canyon Game and Fish Research Station.-105.379241.76121875Weedy picnic ground in shade of Populus angustifolia on gravelly, sandy soil. Phenology: flowering & fruiting.RMRM709695 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.73184Ronald L. Hartman2001730211U.S.A.New MexicoSandovalValles Caldera National Preserve: Jemez Mountains: Jemez Falls Road to turn south; two track and bushwack to southwest corner of Ranch.-106.61735.82769424392489Ponderosa pine forest with rock outcrops and swales. Phenology: flowering & fruiting.RMRM274625 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.William B. Miller196264155U.S.A.WyomingSheridanBig Horn Range: ca 20 mi NW of Sheridan in Tongue River Canyon.-107.331344.84621341Phenology: flowering & fruiting.RMRMRS Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1222Charles P. Pase1961611162U.S.A.ArizonaGilaSierra Ancha Experimental Forest; headquarters.-110.970233.79841554Phenology: fruiting.RMRM709696 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.74330Ronald L. Hartman2001918261U.S.A.New MexicoSandovalValles Caldera National Preserve: Jemez Mountains: area S of NM Hwy 4, between East Fork Jemez River and trun off to Jemez Falls Campground.-106.59461135.82811124232469Ponderosa pine woodland and roadside. Phenology: flowering & fruiting.RMRMRS Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.R. Roy Johnson196072184U.S.A.ArizonaGilaSierra Ancha Experimental Forest; Pocket Creek.-110.9497933.77511585Phenology: fruiting.RMRM762586 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.54893B. E. Nelson2001730211U.S.A.ColoradoRouttNorth-central Colorado: Park Range: Hinman Lake and vicinity to Hinman Creek, ca 1.5 air mi N of the Elk River, ca 6.5 air mi NE of Clark; ca 20 air mi N of Steamboat Springs.-106.835440.765824982500Aspen woodlands. Phenology: flowering & fruiting.RMRM762585 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.54927B. E. Nelson2001731212U.S.A.ColoradoRouttNorth-central Colorado: Elkhead Mountains: Georges Gulch at County 52 E, ca 3 air mi N of The Sleeping Giant, ca 12 air mi NW of Steamboat Springs.-106.986740.60782121Roadside and right of way in rolling open hills. Phenology: flowering & fruiting.RMRM762584 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.56321B. E. Nelson2001828240U.S.A.ColoradoRouttNorth-central Colorado: Park Range: along Greenville Creek and Forest Road 440, ca 1.5-2 air mi E of Round Mountain, ca 1.5 air mi SE of Clark; ca 14.5 air mi N of Steamboat Springs.-106.892140.69423782524Oak-chokecherry-sagebrush slope. Phenology: flowering & fruiting.RMRM826987 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2504David Scott Nancy Bockino2006730211U.S.A.WyomingTetonGrand Teton National Park and Vicinity: Jackson Hole: near Cow Lake, ca 3 air mi WSW of Moran; ca 14 air mi NE of Moose.-110.56543.82812086Dry banks of pond. Phenology: flowering & fruiting.RMRM649185 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3572Amy J. Roderick1997812224U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: East Fork Medicine Bow River, ca 4.6 air mi NE of Elk Mountain townsite.-106.318841.72032134Disturbed pasture with cottonwood trees. Phenology: flowering.RMRM837846 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5633David Scott2007818230U.S.A.WyomingTetonGrand Teton National Park and Vicinity: Jackson Hole: near White Grass fox ranch, ca 3 air mi W of Moose; ca 13 air mi N of Jackson.-110.773943.65662060Disturbed area around structures at historic ranch. Phenology: flowering.RMRM837845 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.86803Ronald L. Hartman2007821233U.S.A.WyomingTetonTarghee National Forest: Ashton Ranger District: Winegar Hole Wilderness: from Rock Lake NW towards Winegar Creek.-110.96244.1241986Wetlands. Phenology: flowering.RM647393 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2092Neil Snow1987816228U.S.A.WyomingTetonSouthwestern Absarokas: ca 9.5 air mi E of Moran Juction, along "Rosie's Ridge" (Forest Road 30060).-110.323743.82292256Open sage mixed with lodgepole pine and aspen.RMRM99323 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.512Arthur C. McIntosh1924723205U.S.A.South DakotaFall RiverFall River Falls; Hot Springs.-103.406443.4001951Dry soil; along railroad. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.260Cheryl Mayer200198251U.S.A.South DakotaCusterBlack Hills: Black Elk Wilderness: east side of Trail #7 beside tributary to Grizzly Bear Creek, ca 4.3 air mi SW of Keystone, ca 2.8 air mi S of Horsethief Lake.-103.481943.8491597Ponderosa pine; open wet area beside creek. Phenology: flowering.RMRM698974 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.260Cheryl Mayer200198251U.S.A.South DakotaCusterBlack Hills: Black Elk Wilderness: east side of Trail #7 beside tributary to Grizzly Bear Creek, ca 4.3 air mi SW of Keystone, ca 2.8 air mi S of Horsethief Lake.-103.481943.8491597Ponderosa pine; open wet area beside creek. Phenology: flowering.RMRM568062 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10704Gary E. Larson James R. Johnson1991822234U.S.A.South DakotaPenningtonSpring Creek.-103.406243.98991323Disturbed bank above creek channel. Phenology: flowering.RMRM649186 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3771Amy J. Roderick1997817229U.S.A.WyomingCarbon[location and coordinates withheld]2088Big sagebrush draw in surrounding sagebrush grasslands; dry sandy soil. Phenology: flowering & fruiting.RM651340 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2446B. A. Packer J. Brondum and T. McGowan1997730211U.S.A.WyomingConverseLaramie Range: along unnamed branch of Indian Creek, ca 19 air mi SW of Douglas.-105.430342.427518991920Hillside Phenology: flowering & fruiting.RMRM718699 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.353B. Koblitz2000626178U.S.A.ColoradoLarimerRed Feather Lakes Road, ca 5 mi W from its intersection with U.S. Hwy 287.-105.28833340.791829Roadside, sandy and gravelly soil. Phenology: flowering & fruiting.RMRM302375 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.676Barry Hammel197797250U.S.A.ColoradoArapahoeEngelwood: field N of 6136 S Niagara Court; near housing development.1615Bottom of moist draw; with Conyza canadensis, Erigeron divergens, Aster falcatus and Xanthium. Phenology: flowering & fruiting.RMRM382534 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.962Blaine H. M. Mooers198584216U.S.A.ColoradoBacaCampo Research Natural Area: Commanche Natinal Grassland: W of U.S. Hwy 385; 3.5 mi S of Campo.1303Sandy soil, 5% slope, 90 degree aspect, barren road shoulder. Phenology: flowering.RMUSFS480315 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.164E. R. Ware1932912256U.S.A.ColoradoRio BlancoWhite River National Forest: North Fork White River.-107.43740.055224693 degree south slope, humus loam, woodland, river bank; with Urtica, Granium, Heracleum and Sambucus. Phenology: flowering.RMUSFS480314 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.193E. R. Ware1932910254U.S.A.ColoradoGarfieldWhite River National Forest.-107.330639.54341768Level, clay loam, waste ground; with Chenopodium, Sonchus and Cleome. Phenology: flowering & fruiting.RMUSFS480324 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.202E. R. Ware1932917261U.S.A.ColoradoGarfieldWhite River National Forest: West Elk Ranger Station Yard.-107.625639.673222255 degree west slope, sandy clay, waste ground; with Chenopodium, Elymus and Iva xanthifolia. Phenology: flowering.RMUSFS480283 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.R-370Felix E. Read1936922266U.S.A.ColoradoDeltaGunnison National Forest: Paonia Ranger Station.1676Level, clay loam, park; with Russian thistle, mustard and dandelion. Phenology: flowering & fruiting.RMRM57165 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2516Francis Ramaley190686218U.S.A.ColoradoBoulderBoulder.Mesa. Phenology: flowering & fruiting.RMRM57164 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2604Francis Ramaley1906929272U.S.A.ColoradoBoulderNear Boulder.Phenology: flowering & fruiting.RMRM23322 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.A203Francis Ramaley1900101274U.S.A.ColoradoBoulderNear Boulder.Phenology: flowering.RMRM160494 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3448George E. Osterhout1906914257U.S.A.ColoradoWeldWindsor.Phenology: flowering & fruiting.RMRM733770 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5832George E. Osterhout1918821233U.S.A.ColoradoGarfieldGlenwood Springs.Phenology: flowering & fruiting.RMRM734221 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6474George E. Osterhout1925825237U.S.A.ColoradoWeldWindsor.Phenology: flowering & fruiting.RMRM733349 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6500George E. Osterhout192592245U.S.A.ColoradoLarimerE of Loveland.Along the road. Phenology: flowering & fruiting.RMRM160495 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6503George E. Osterhout1925910253U.S.A.ColoradoWeldWindsor.Phenology: flowering & fruiting.RMRM160518 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8George E. Osterhout189293247U.S.A.ColoradoWeldNew Windsor.Phenology: flowering & fruiting.RM651341 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.42462B. E. Nelson1997811223U.S.A.WyomingConverseLaramie Range: Spring Creek valley off Glendo or County Road 6, ca 16 air mi NE of Laramie Peak, ca 5.3 air mi NE of Esterbrook; ca 21 air mi SSE of Douglas.-105.294942.471617371768Bottom of draw and vernal pools. Phenology: flowering & fruiting.RM651342 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.42484B. E. Nelson1997811223U.S.A.WyomingPlatteLaramie Range: along Spring Creek below Ridge or County Road 6, ca 16 air mi NE of Laramie Peak, ca 5.5 air mi NE of Esterbrook; ca 13.5 air mi W of Glendo.-105.275242.471617251737Gravel bars and stony stream channel. Phenology: flowering & fruiting.RM651379 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.42583B. E. Nelson1997812224U.S.A.WyomingAlbanyLaramie Range: along Three Cripples Creek ca 1-1.5 air mi W of Harris Park or Forest Road 633, ca 1.5-2 air mi ESE of Esterbrook; ca 25 air mi S of Douglas.-105.332442.413116951798Brushy canyon bottom along the stream. Phenology: flowering & fruiting.RM651380 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.42641B. E. Nelson1997813225U.S.A.WyomingConverse[location and coordinates withheld]1713Open areas among the thickets in the creek bottom. Phenology: flowering & fruiting.RMRM47526 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3288J. H. Cowen1896725207U.S.A.ColoradoLarimerFort Collins,.Waste places. Phenology: flowering & fruiting.RMRM529283 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.22Jeff Peterson Tom Caplan198595248U.S.A.ColoradoFremont4 mi SE of Fremont county line on west side of Hwy 115.-104.967938.51341847Steep dry east facing slope, pinyon-juniper woodlands. Phenology: flowering.RMRM580368 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.208Kanya Santanachote198978189U.S.A.ColoradoBoulderColorado Tallgrass Prairie Natural Area: Parcel 7; S of Boulder at the beginning of Colo Hwy 93.1700Mesic tallgrass community; soil clay loam. 1 of 2 sheets. Phenology: flowering.RMRM580369 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.208Kanya Santanachote198978189U.S.A.ColoradoBoulderColorado Tallgrass Prairie Natural Area: Parcel 7; S of Boulder at the beginning of Colo Hwy 93.1700Mesic tallgrass community; soil clay loam. 2 of 2 sheets. Phenology: flowering.RMRM37523 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.579Leslie N. Goodding1901831243U.S.A.ColoradoLarimerDry Creek.Debris in washes. Phenology: flowering & fruiting.RM651343 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.42921B. E. Nelson1997818230U.S.A.WyomingConverseLaramie Range: along Poison Lake or County Road 4 about halfway between Poison Lake and Wagon Hound Creek, ca 12.5 air mi SW of Douglas.-105.511342.602216431707Slopes just below ridge cliff and spine. Phenology: flowering & fruiting.RMRM529364 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7Mary Butcher Anne Petersen198593246U.S.A.ColoradoEl Paso1 mi NE of Falcon on Hwy 24.-104.58138.94782103Disturbed short grass railroad prairie, sandy soil. Phenology: flowering & fruiting.RMRM793954 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.225N. E. Hastings C. Bern2005727208U.S.A.ColoradoArapahoeBuckley Air Force Base: site 660 m NE of southwest corner of the installation. 521748E 4392730N.1711Rolling shortgrass prairie on sandy loam; with Artemisia frigida, Psoralidium tenuiflorum, Aristida purpurea, Nassella virdula, Hesperostipa comata, Bouteloua gracilis, Bromus spp. Phenology: flowering.RMRM793955 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.256N. E. Hastings C. Bern2005914257U.S.A.ColoradoArapahoeBuckley Air Force Base: site 655 m E of southwest corner of the installation. 521788E 4392499N.1718Rolling disturbed roadside on silt-like loam; with Gutierrezia sarothrae, Cirsium arvense, Helianthus annuus, Convolvulus arvensis, Salsola tragus, Bromus tectorum. Phenology: flowering.RM651344 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.43011B. E. Nelson1997819231U.S.A.WyomingNatronaLaramie Range: along Smith Creek below Otter Creek at the east end of Muddy Mountain on Smith Creek or County Road 607, ca 16 air mi SE of Casper.-106.157642.656918841981Open slopes with scattered large limestone boulders and sagebrush and scattered mountain shrub. Phenology: flowering & fruiting.RM651345 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.43109B. E. Nelson1997819231U.S.A.WyomingNatrona[location and coordinates withheld]18781926Sandy open ponderosa pine forest. Phenology: flowering & fruiting.RMRM172012 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.198Robert M. Muir1937829241U.S.A.ColoradoWeldAt the experimental range.-104.705340.86481524Swale, grassland. Phenology: flowering & fruiting.RMRM299496 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2787Ronald L. Hartman1968826239U.S.A.New MexicoColfaxPhilmont Scout Ranch, near Cimarron: road 2 mi NE of Training Center.-104.9355936.4872012Along roadside. Phenology: flowering.RMRM295466 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3133Ronald L. Hartman197171182U.S.A.ColoradoLarimer1 mi N of Dale Creek on Hwy 287.Roadside. Phenology: flowering & fruiting.RMUSFS480316 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.V. H. Reid197267159U.S.A.ColoradoMesaBadger Wash Experimental Area.1524Salt desert-shrub. Phenology: vegetative only.RMRM344628 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5002Vlad Siplivinsky Hans Beck1982825237U.S.A.ColoradoMesaColorado National Monument: Rim Rock Drive at Red Canyon Overlook.Phenology: flowering.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.43161Ronald L. Hartman199382214U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Tunp Range: Pine Creek, ca 2 road mi NNE of Pine Creek Ski Area, ca 8 air mi NE of Cokeville.-110.82277842.13555621952256Stream bottom and shaley slopes. Phenology: flowering.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10400Stuart Markow199286219U.S.A.IdahoClarkTarghee National Forest: Western Centennial Mountains: above head of Pleasant Valley Creek, ca 8.5 air mi NW of Spencer.-112.331244.424623172439Open slope with mostly Artemisia, grasses, and scattered forbs.RMRM652154 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10620Stuart Markow1992812225U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau: Eccles Road, W of intersection with Mesa Falls Road, ca 16.5 air mi NE of Ashton.-111.405344.323918591890Clearcut in Pinus contorta, dominated by forbs and grasses, with scattered Pinus contorta regeneration. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10789Stuart Markow1992817230U.S.A.IdahoFremontTarghee National Forest: Henrys Lake Mountains: along Twin Creek, ca 10 air mi SW of West Yellowstone, Montana.-111.306344.612720122073Coniferous forest dominated by Pseudotsuga menziesii and Symphoricarpos.RMRM652152 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10930Stuart Markow1992819232U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau: intersection of U.S. Hwy 20 and Sheep Falls Rd., ca 8 air mi N or Ashton.-111.445544.1941859Clearcut Pinus contorta with mostly weedy forbs and grasses, scattered Pinus contorta. Phenology: flowering & fruiting.RMRM652158 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5605Stuart Markow1991811223U.S.A.WyomingTetonTarghee National Forest: East Slope Snake River Range: Divide Trail, S of Mosquito Creek Road.-110.923343.42819512012Roadside and adjacent coniferous forest, dominated by Pinus contorta, Abies lasiocarpa, and Picea engelmannii, with some riparian.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5751Stuart Markow1991813225U.S.A.IdahoFremontTarghee National Forest: West Slope Teton Range: Porcupine Creek Campground and surrounding area.-111.224144.09316761737Coniferous forest dominated by Pinus contorta, with openings and adjacent roadside, and some riparian.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5880Stuart Markow1991815227U.S.A.IdahoTetonTarghee National Forest: West Slope Teton Range: Pinochle Road, 0.5 mi E of entrance to National Forest.-111.089743.904720122103Coniferous forest dominated by Pinus contorta, Pseudotsuga menziesii, and Prunus virginiana.RMRM652156 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9808Stuart Markow1992724206U.S.A.IdahoClarkTarghee National Forest: Western Centennial Mountains: 0.5 mi N of entrance to Huntley Canyon, ca 1 air mi NW of Spencer.-112.18644.36811829Open slope dominated by Artemisia, Symphoricarpos, and grasses, with many roadside weeds. Phenology: flowering & fruiting.RMRM651524 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4696B. A. Packer1998728209U.S.A.WyomingAlbanyLaramie Range: Sherman, ca 14.5 air mi SE of Laramie.-105.354241.096122862378Along railroad tracks; and in granite outcroppings and sagebrush grassland. Phenology: flowering & fruiting.RMRM651525 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4811B. A. Packer1998729210U.S.A.WyomingLaramieLaramie Range: Granite Reservoir: ca 15 air mi E of Laramie.-105.262141.186322862347North facing slope. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1982James P. Vanderhorst1990827239U.S.A.ColoradoRio BlancoFlat Tops/White River Plateau: Sterry Lake, ca 16 air mi SE of Meeker.-107.606839.92062621Heavily grazed meadows around lake.RMRM651526 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5287B. A. Packer T. McGowan and J. Brondum1998812224U.S.A.WyomingNatronaLaramie Range: ca 10 air mi SE of Casper on County Road 607, along unnamed dry creek.-106.157642.700618901981Along dry creek beds and surrounding grasslands. Phenology: flowering & fruiting.RMRM651527 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5576B. A. Packer T. McGowan and J. Brondum1998829241U.S.A.WyomingAlbanyLaramie Range: along North Laramie River.-105.35242.19819812103Along trail to river. Phenology: flowering & fruiting.RMRM960587 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1279Roger L. Williams1998821233U.S.A.WyomingCarbonSierra Madre: north slope of Green Mountain.2652Open disturbed slope with Aster glaucodes. Few plants. Phenology: flowering & fruiting.RM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2897Jean Wood199586218U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Chewelah Mountain, ca 7 air mi E of Chewelah, along Tenmile Creek W of ski area road.-117.573348.301111891250Mature cedar/hemlock forest, crossed by old road with conifer saplings and alders. Phenology: flowering & fruiting.RMRM646400 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.19843B. E. Nelson1990818230U.S.A.WyomingTetonWyoming/Salt River Ranges: Wyoming Range: Willow Creek Drainage: ca 0.5 air mi ENE of Anns Peak, ca 5 air mi SE of Hoback Junction, ca 16 air mi SE of Jackson.-110.662843.27142042Drier areas around large pond. Phenology: fruiting.RMRM646527 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.23690B. E. Nelson Russ Nelson1992720202U.S.A.WyomingLincoln[location and coordinates withheld]1920Steep brushy slopes and roadcut. Phenology: flowering & fruiting.RMRM646528 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.24058B. E. Nelson Russ Nelson1992811224U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Quaking Aspen Hollow just off Dry Creek, ca 4 air mi SE of Afton.-110.86542.699721342195Steep banks along stream channel. Phenology: flowering & fruiting.RMRM646529 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.24113B. E. Nelson Russ Nelson1992812225U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: along Hot Foot Creek between Greys River and Middle Ridge, ca 11 air mi SE of Alpine; ca 25.5 air mi NNE of Afton.-110.82543.093320122073Southerly-facing slopes with scattered sagebrush and small aspen stands. Phenology: flowering.RMRM646530 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.24201B. E. Nelson Russ Nelson1992814227U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: unnamed tributary of Fisherman Creek ca 1 mi W of Sled Runner Creek, ca 8 air mi SE of Bondurant; ca 28 air mi NW of Pinedale.-110.273343.131121642225Roadside in sagebrush-grassland. Phenology: flowering & fruiting.RMRM646531 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.24409B. E. Nelson Russ Nelson1992817230U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: Porcupine Creek on the slopes of Middle Ridge, ca 1-1.5 air mi E of Greys River; ca 22.5 air mi NNE of Afton.-110.783343.032221642225Roadside and disturbed areas. Phenology: flowering & fruiting.RMRM646532 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.24482B. E. Nelson Russ Nelson1992817230U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: along Greys River Road ca 2.8 road mi above the forks; ca 9 air mi ESE of Alpine; ca 27.5 air mi N of Afton.-110.844743.121859Roadside. Phenology: flowering.RMRM646533 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.24495B. E. Nelson Russ Nelson1992817230U.S.A.WyomingLincoln[location and coordinates withheld]1826Roadside. Phenology: fruiting.RMRM646490 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.24676B. E. Nelson Russ Nelson1992819232U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: along Blind Bull Creek ca 1 air mi E of Greys River Road, ca 19.3 air mi NE of Afton.-110.690642.94392042Grassy overflow channels. Phenology: flowering & fruiting.RMRM646491 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.24708B. E. Nelson Russ Nelson1992819232U.S.A.WyomingLincoln[location and coordinates withheld]1935Roadside. Phenology: flowering & fruiting.RMRM646401 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.27740Ronald L. Hartman1990818230U.S.A.WyomingTetonWyoming/Salt River Ranges: Wyoming Range: Buck Creek to Beaver Mountain.-110.603143.271120732439Grassy slopes and coniferous forest. Phenology: fruiting.RMRM646492 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.32917Ronald L. Hartman Bruce Embury1992622174U.S.A.WyomingLincoln[location and coordinates withheld]1707Open area left by receding water of reservoir. Phenology: flowering.RMRM646493 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34858Ronald L. Hartman1992726208U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Trail Creek to Elk Mountain, 1-1.7 mi NE of trail head; 8 air mi E of Alpine.-110.842543.16521342439Calcareous substrate with open herb communities. Phenology: flowering.RMRM646494 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.35000Ronald L. Hartman1992728210U.S.A.WyomingLincoln[location and coordinates withheld]1719Bench exposed due to draw-down of Palisades Reservoir and adjacent non affected area. Phenology: flowering.RMRM646495 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.35860Ronald L. Hartman1992816229U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: lake ca 1 air mi SW of Visser Peak.-110.824742.932560Lake margin, limestone outcrop, and coniferous forest; limestone outcrop. Phenology: flowering.RMRM646496 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.35990Ronald L. Hartman1992817230U.S.A.WyomingLincoln[location and coordinates withheld]1798Streamside and wetlands and roadside. Phenology: flowering & fruiting.RMRM646497 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.36048Ronald L. Hartman1992818231U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: North Fork Sheep Creek from Sheep Creek to 1.5 mi upstream; ca 3 air mi W to WNW of McDougal Gap.-110.632842.856422192286Sagebrush grassland, stream with willow thickets, and gravelly slopes (limestone); slopes. Phenology: flowering & fruiting.RMRM646498 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.36417Ronald L. Hartman1992821234U.S.A.WyomingLincoln[location and coordinates withheld]1737Streamside and adjacent uplands. Phenology: fruiting.RMRM646499 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.36497Ronald L. Hartman1992821234U.S.A.WyomingLincoln[location and coordinates withheld]1829Riverside and marshy meadows. Phenology: fruiting.RMRM646500 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.36592Ronald L. Hartman1992821234U.S.A.WyomingLincoln[location and coordinates withheld]1829Stream banks and roadside. Phenology: flowering & fruiting.RMRM646545 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.36781Ronald L. Hartman1992824237U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: trail to Long Hollow but then straight N up spine of Mount Schidler; ca 2.5 air mi NE of Middle Piney Lake.-110.540842.629425602865Coniferous forests and scree slopes. Phenology: flowering & fruiting.RMRM646399 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6430Walter Fertig1990821233U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: along U.S. Hwy 189/191 in Hoback Canyon.-110.544243.28471926Open, weedy roadside.RMRM646398 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6535Walter Fertig B. E. Nelson1990821233U.S.A.WyomingTetonWyoming/Salt River Ranges: Wyoming Range: Palmer Creek, ca 13 air mi S of Jackson.-110.724743.301118902317Moist, shady creek banks; dry sagebrush-rabbitbrush clearing; Douglas fir/aspen semi-open woods; moist meadow adjacent to the creek and trail: moist meadow adjacent to the creek and trail.RMRM647333 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.43161Ronald L. Hartman199382214U.S.A.WyomingLincolnWyoming/Salt River Ranges: Tunp Range: Pine Creek, ca 2 road mi NNE of Pine Creek Ski Area, ca 8 air mi NE of Cokeville.-110.822842.138321952256Stream bottom and shaley slopes. Phenology: flowering.RMRM647334 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.43450Ronald L. Hartman199383215U.S.A.WyomingLincolnWyoming/Salt River Ranges: Tunp Range: Hobble Creek from Sams Creek to Coantag Creek, ca 20 air mi NNE of Cokeville.-110.78542.356921642195Stream bottom and lower slopes. Phenology: flowering.RMRM613749 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.43753Ronald L. Hartman1993813225U.S.A.WyomingLincolnUpper Green River Basin: Cretaceous Mountain/Hogsback Ridge Area: just W of Rainbow Camp, ca 20 air mi SW of Big Piney.-110.250642.26832103Shaley slopes and badlands. Phenology: flowering & fruiting.RMRM647335 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.44675Ronald L. Hartman1993820232U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Commissary Ridge, southwest flank: Stream branch NE of Pole Creek.-110.667242.152523782469Stream side and aspen on upslope. Phenology: flowering & fruiting.RMRM647336 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.44810Ronald L. Hartman1993822234U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Spring Lake Creek trail from divide to western end of Lake Alice.-110.766742.399223782439Rock slides, coniferous forests and shoreline. Phenology: flowering & fruiting.RMRM613748 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.44961Ronald L. Hartman1993825237U.S.A.WyomingSubletteUpper Green River Basin: Cretaceous Mountain/Hogsback Ridge Area: northeast side of the Hogsback, ca 18 air mi SW of Big Piney.-110.314742.340324082621Calcareous slopes and outcrops. Phenology: flowering.RMRM647864 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10569B. E. Nelson1983731212U.S.A.WyomingHot SpringsBighorn Basin: along Gooseberry Creek, ca 1 mi W of Wyo Hwy 120; ca 3.5 air mi E of Dickie (LU Ranch); ca 34.5 air mi NW of Thermopolis.-108.679443.99921676Grassy creek bottom.RMRM598200 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11479B. E. Nelson198499253U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Antelope Draw on County Road 149; ca 7 air mi N of Burns; ca 27 air mi NE of Cheyenne.-104.349141.29511707Road shoulders and barrow pits. Phenology: fruiting.RMRM598199 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11559B. E. Nelson1984910254U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: "Five Buttes", ca 5.3 air mi of Jay Em; ca 27.5 air mi N of Lingle, just E of U.S. Hwy 85.-104.363242.53491493Slopes of the buttes. Phenology: fruiting.RMRM598198 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11607B. E. Nelson1984910254U.S.A.WyomingNiobraraSouthern Powder River Basin/Southeastern Plains: Hat Creek Breaks: ridge between S Bar and East Indian Creeks, ca 1.5 air mi SW of Whitman; ca 18 air mi NE of Lusk.-104.129142.86881432Roadside. Phenology: fruiting.RMRM598197 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11638B. E. Nelson1984910254U.S.A.WyomingNiobrara[location and coordinates withheld]1341Roadside. Phenology: flowering.RMRM647880 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.14070B. E. Nelson1987630181U.S.A.WyomingParkBighorn Basin: Shearing Pens Reservoir above West Branch Whistle Creek, ca 12 air mi SE of Powell.-108.6630644.600561341Along shores of reservoir. Phenology: flowering.RMRM324827 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1944B. E. Nelson1978917260U.S.A.WyomingJohnsonPowder River Basin: ca 14.5 air mi NE of Edgerton on Wyo Hwy 387, ca 52 air mi NNE of Casper in JJ Draw.-106.057843.48061524In clay in disturbed bottom with Artemisia biennis and Articum minus under Populus sargentii. Occasional. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4193Heather Bradtke200185217U.S.A.OregonWallowaUmatilla National Forest and Vicinity: Elk Flats Trail, ca 30 air mi E of Milton-Freewater.-117.77341745.91858841463Flat land near a river; soil fine, deep; slope 0-20; aspect southeast. Phenology: flowering.RMRM348421 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5871B. E. Nelson198078190U.S.A.WyomingWashakieBighorn Basin: in Cornell Gulch on the Nowater Trail, ca 2 air mi W of Nowood, ca 30.5 air mi S of Ten Sleep.-107.46443.59561707Roadside and disturbed areas. Phenology: fruiting.RMRM348420 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6716B. E. Nelson1980720202U.S.A.WyomingJohnsonBig Horn Mountains: along Clear Creek just off U.S. Hwy 16, ca 5.3 air mi WSW of Buffalo.-106.8113944.33141676Roadside and other disturbed areas. Phenology: fruiting.RMRM387500 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5566June Haines1985816228U.S.A.WyomingFremontHaines Farm, ca 9 air mi W of Riverton on U.S. Hwy 26.-108.527743.09161639East side of elm trees. Phenology: fruiting.RMRM387501 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5614June Haines1985820232U.S.A.WyomingFremontWind River Basin: Haines farm, ca 9 mi W of Riverton on U.S. Hwy 26.-108.527743.09161639North side of house, in mint patch. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10086Heather Bradtke2002727208U.S.A.OregonWallowaUmatilla National Forest and Vicinity: Wenaha-Tucannon Willderness: Smooth Ridge Trail and along the Wenaha River, ca 34 mi E and 6 mi S of Walla Walla.-117.645.980278609762Exposed copper and platey soils with grass dominant. Phenology: flowering & fruiting.RMRM324831 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5329Keith H. Dueholm197884216U.S.A.WyomingConversePowder River Basin: ca 1 air mi N of Orpha.-105.502242.86031524Plains along highway right-of-way, dry ditches. Phenology: fruiting.RMRM324830 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5711Keith H. Dueholm197888220U.S.A.WyomingCampbell[location and coordinates withheld]1371Rocky hills, plains, holding pond, wet mud along creekbeds, flats, moist grassy ditches; slopes. Phenology: fruiting.RMRM324828 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5888Keith H. Dueholm1978810222U.S.A.WyomingJohnson[location and coordinates withheld]1250Shaley bluffs, floodplain of creek, slopes. Phenology: fruiting.RMRM324829 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6018Keith H. Dueholm1978811223U.S.A.WyomingSheridan[location and coordinates withheld]1341Plains, rocky slopes, draw with standing water, creek and meadows along creek. Phenology: fruiting.RMRM333464 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8411Keith H. Dueholm1979721202U.S.A.WyomingJohnson[location and coordinates withheld]1402Sandy flats along lake, edges and meadows along creek; flats. Phenology: fruiting.RMRM333423 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8682Keith H. Dueholm197983215U.S.A.WyomingJohnsonPowder River Basin: ca 3 air mi E of Lake De Smet.-106.6933344.49081463High, rocky ridge, gravelly crest with clinker, sagebrush plain at base; slopes.RMRM333424 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8877Keith H. Dueholm197989221U.S.A.WyomingSheridanPowder River Basin: along U.S. Hwy 87, ca 2 road mi NW of Ranchester.-107.224244.92941463Wet ditches, meadows along small stream, tall grass prairie of big bluestem and slough grass, between railroad and wet ditch; prairie. Phenology: fruiting.RMRM334284 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9001Keith H. Dueholm1979811223U.S.A.WyomingSheridanPowder River Basin: ca 10 air mi W of Parkman.-107.5316744.97581585Crataegus thickets on slopes above small creek, margins of creek, and embankment. Phenology: fruiting.RMRM333465 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9029Keith H. Dueholm1979812224U.S.A.WyomingSheridanPowder River Basin: Prairie Dog Creek, along Wyo Hwy 336, ca 2 air mi E of Sheridan.-106.9019444.82751128Meadows and willow thickets along creek; roadside. Phenology: flowering & fruiting.RMRM334232 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9191Keith H. Dueholm1979814226U.S.A.WyomingNatronaPowder River Basin: "Alkali Flat" and Dead Horse Creek Flats, ca 13 air mi SW of Midwest.-106.535643.34641585Creek flats. Phenology: fruiting.RMRM530925 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.13391Ronald L. Hartman198171182U.S.A.WyomingParkWest ridge leading to summit of Heart Mountain.-109.167844.672818902134Open slopes and ridges and badlands; sandstone and shales. Phenology: fruiting.RMRM537289 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.22007Ronald L. Hartman1985819231U.S.A.WyomingParkNorthern Absarokas: Paint Creek, 10-11 air mi E of Sunlight Ranger Station.-109.330844.716720732256Wooded slopes and stream bottom. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7225Heather Bradtke200271182U.S.A.WashingtonGarfieldUmatilla National Forest and Vicinity: Cape Horn Ridge, ca 8 mi S and 15 mi W of Anatone.-117.44222246.25638911671359Grass steppe in shallow, copper, platey soil; slope: 10; aspect southwest. Phenology: flowering & fruiting.RMRM585407 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10588Walter Fertig199184216U.S.A.WyomingSubletteWest Slope Wind River Range: South shore of Boulder Lake, 10 air mi E of Pinedale. Also secs 8 and 18.-109.673142.84362225Dry, sandy sagebrush grassland on bluff above lake. Yellow ligulate flowers. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7593Heather Bradtke200275186U.S.A.WashingtonAsotinUmatilla National Forest and Vicinity: Menatchee Creek and Trail, ca 5 mi S and 12 mi W of Anatone.-117.38888946.074167786896Riparian areas with east slopes above river; slope 15; aspect west. Phenology: flowering & fruiting.RMRM585406 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11518Walter Fertig1991816228U.S.A.WyomingSubletteWest Slope Wind River Range: adjacent to Skyline Drive at junction of Lakeside Lodge Road, ca 0.25 mi S of South shore of Fremont Lake, 3 air mi NE of Pinedale.-109.8142.902522712286Dry, sandy-gravelly roadside right-of-way. Phenology: fruiting.RMRM585405 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11558Walter Fertig1991816228U.S.A.WyomingSubletteWest Slope Wind River Range: north shore of Half Moon Lake, ca 8 air mi NE of Pinedale.-109.730642.93112317Sagebrush-rabbitbrush grassland on slope above lake. Phenology: fruiting.RMRM585404 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.12167Walter Fertig1991824236U.S.A.WyomingSubletteWest Slope Wind River Range: Pixley Creek Valley and rocky slopes on north side of creek, ca 2 air mi E of Squaretop Mountain, ca 24 air mi N of Pinedale.-109.739743.231426823048Open canopy talus slope on north bank in mixed aspen-sagebrush community. Phenology: fruiting.RMRM585430 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5142Walter Fertig199082214U.S.A.WyomingSubletteWest Slope Wind River Range: north shore of New Fork Lakes, ca 17 air mi N of Pinedale.-109.947843.10312384Rocky/sandy beach. Ligulate flowers yellow. Phenology: fruiting.RMRM585429 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5810Walter Fertig1990810222U.S.A.WyomingSubletteWest Slope Wind River Range: west bank of Willow Lake, ca 9 air mi NNW of Pinedale.-109.909443.00523472353Weedy roadside. Phenology: flowering & fruiting.RMRM585428 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6036Walter Fertig1990811223U.S.A.WyomingSubletteWest Slope Wind River Range: southeast shore of Fremont Lake, ca 3 air mi NE of Pinedale.-109.8142.91722256Sagebrush plain adjacent to lakeside woods. Phenology: fruiting.RMRM598196 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.28351B. E. Nelson199385217U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole Rim: between Lone Tree Canyon and Castle Rocks off County Road 155, ca 8-8.5 air mi SW of Hawk Springs; ca 27 air mi SSW of Torrington.-104.402141.722515121548Rolling plains of sand sage-grassland. Phenology: flowering & fruiting.RMRM598195 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.28511B. E. Nelson1993817229U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek on Marsh or County Road 245-1, ca 3/4 mi W of (upside down V)X Ranch, ca 25.5 air mi ENE of Iron Mountain (Farthing); ca 35 air mi N of Cheyenne.-104.7451941.6337816461670Drier cobblestone gravel bars. Phenology: flowering & fruiting.RMRM598255 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.28686B. E. Nelson1993817229U.S.A.WyomingGoshen[location and coordinates withheld]15061512Roadside and adjacent base of bluffs and thickets. Phenology: flowering & fruiting.RMRM598194 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.28694B. E. Nelson1993818230U.S.A.WyomingPlatte[location and coordinates withheld]1609End of wheat and fallow strips and adjacent roadside. Phenology: flowering & fruiting.RMRM598193 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.28727B. E. Nelson1993818230U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: NE of Glomill Reservoir off County Road 125, ca 12 air mi W of Yoder; ca 21 air mi SW of Torrington.-104.527941.913651390Base of sandstone cliff of a small hogback. Phenology: fruiting.RMRM598192 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.28781B. E. Nelson1993818230U.S.A.WyomingGoshen[location and coordinates withheld]13901414Sandy slopes with scattered small cobblestones and conglomerate outcrops. Phenology: flowering & fruiting.RMRM598191 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.28899B. E. Nelson1993822234U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Dickau or County Road 47, on a tributary of West Fork Twentymile Creek, ca 19.5 air mi NE of Douglas; ca 10.8 air mi NNW of Shawnee.-105.042542.893815271548Moist meadows along drainage channel. Phenology: flowering.RMRM598190 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.28977B. E. Nelson1993822234U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along a tributary of Twentymile Creek on Manning or County Road 53, ca 24.5 air mi NE of Douglas; ca 14 air mi N of Lost Springs.-104.962542.96671463Benches and banks along drainage channel. Phenology: fruiting.RMRM598189 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29042B. E. Nelson1993824236U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Goldeneye Wildlife and Recreation Area: Burlington Lake, ca 1 air mi NE of U.S. Hwy 20 and 26, ca 6 air mi E of Natrona; ca 23 air mi NW of Casper.-106.702243.01611676Patches on the flats near the lake. Phenology: fruiting.RMRM598188 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29108B. E. Nelson1993824236U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Poison Spider Creek on Poison Spider or County Road 201 between Emigrant Gap Ridge and Oil Mountain, ca 18.5 air mi W of Casper.-106.683942.828616761695Sand bars, stream bank, and low moist benches. Phenology: flowering & fruiting.RMRM598187 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29165B. E. Nelson1993825237U.S.A.WyomingNatrona[location and coordinates withheld]1560Dry, stony, or gravelly flats in the river bottom. Phenology: flowering & fruiting.RMRM598186 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29190B. E. Nelson1993826238U.S.A.WyomingConverse[location and coordinates withheld]1451Parking lot. Phenology: fruiting.RMRM598185 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29309B. E. Nelson1993826238U.S.A.WyomingConverse[location and coordinates withheld]1554Roadside. Phenology: flowering & fruiting.RMRM598184 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29369B. E. Nelson1993829241U.S.A.WyomingNiobrara[location and coordinates withheld]1564Roadside and adjacent shoulders. Phenology: flowering & fruiting.RMRM598183 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29496B. E. Nelson1993829241U.S.A.WyomingNiobraraSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Indian Creek off Hat Creek or County Road 64, ca 16 air mi NE of Lusk; ca 19.8 air mi NW of Van Tassell.-104.227342.928713041310Meadows and flats in the stream bottom. Phenology: flowering & fruiting.RMRM598182 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29573B. E. Nelson1993831243U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: along North Platte River just below mouth of Laramie River, at east edge of Fort Laramie National Historic Site, ca 1.3 air mi SSW of Fort Laramie; ca 20 air mi WNW of Torrington.-104.529642.196512861292Cottonwood woodland in the river bottom. Phenology: fruiting.RMRM598254 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29639B. E. Nelson1993831243U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: along the North Platte River on London Flats, ca 2.2 air mi S of Lingle, ca 9.5 air mi WNW of Torrington.-104.356642.10721262Bench and slope along the river. Phenology: fruiting.RMRM598253 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29883B. E. Nelson1993927270U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Hartville Uplift: along Whalen Canyon Road ca 3/4 mi NE of Hell Gap, ca 14.5 air mi NW of Fort Laramie; ca 33 air mi NW of Torrington.-104.634142.40441493Under junipers. Phenology: flowering & fruiting.RMRM598252 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29928B. E. Nelson1993929272U.S.A.WyomingNiobrara[location and coordinates withheld]14631524Disturbed areas around ponderosa pine and juniper. Phenology: flowering.RMRM598251 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.29993B. E. Nelson1993101274U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along the North Platte River above River Canyon in the upper end of Glendo Reservoir, ca 7.3 air mi NNW of Glendo, ca 29 air mi NW of Guernsey.-105.076142.599414081432Steep rocky slope with juniper woodland. Phenology: fruiting.RMRM598250 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.30036B. E. Nelson1993101274U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Hartville Uplift: just N of Wendover in Wendover Canyon along the North Platte River, ca 8 air mi NW of Guernsey.-104.881342.328913531371Steep, rocky banks with thickets between the river and the railroad tracks. Phenology: fruiting.RMRM654553 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.32852B. E. Nelson1994715196U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along East Antelope or County Road 52, ca 0.5 air mi SW of West Fork Shawnee Creek, ca 12.5 air mi E of Douglas; ca 8 air mi NNE of Orin.-105.137542.761815241533Mixed grass plains with large erosional areas and outcrops of siltstone-mudstone. Phenology: flowering & fruiting.RMRM654554 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.32980B. E. Nelson1994718199U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Lost Creek at U.S. Hwy 18-20 just ESE of Lost Springs, ca 23 air mi E of Douglas.-104.921242.76181487Highway right-of-way. Phenology: flowering.RMRM654555 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33084B. E. Nelson David Reilly and Jim Cahill1994720201U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: S of the Laramie River along the north side of the Fort Laramie Canal, ca 2 air mi SW of Fort Laramie (town); ca 21 air mi NW of Torrington.-104.551642.196112921298Seep area along small drainage. Phenology: flowering.RMRM654556 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33129B. E. Nelson1994720201U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: NW of the hospital ruins, ca 2 air mi SW of Fort Laramie (town); ca 21 air mi NW of Torrington.-104.558542.20631298Sandy upland plains. Phenology: flowering & fruiting.RMRM654557 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33153B. E. Nelson1994720201U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: off the west edge of Slater flats ca 1.5 air mi W of Goshen Hole Rim, ca 11 air mi SE of Wheatland; ca 1.5-2 air mi E of Bordeaux.-104.818341.937315481567Steep sandy slopes in siltstone breaks. Phenology: flowering & fruiting.RMRM654558 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33205B. E. Nelson1994729210U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along County Road 27, ca 1.5 air mi N of the end of Wyo Hwy 159, ca 2.3 air mi NE of Tea Kettle Rock; ca 13.5 air mi N of Torrington.-104.19142.253413961420Roadside furrow and adjacent sandy grassland. Phenology: flowering & fruiting.RMRM654559 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33235B. E. Nelson1994729210U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along County Road 32, ca 1.25 air mi W of County Road 27, ca 16.8 air mi N of Torrington; ca 14 air mi SE of Jay Em.-104.191842.309414541481Rolling sandy plains dominated by Calamovilfa. Phenology: flowering.RMRM654560 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33413B. E. Nelson Tim Chumley and Robbin Romberg199483215U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Chugwater Creek SE of Degans Butte, ca 7.5-8.5 air mi SW of Chugwater; ca 25 air mi S of Wheatland.-104.949241.691116891701Meadows and flats along the stream with boxelder, cottonwood, and willow trees. Phenology: flowering & fruiting.RMRM654561 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33462B. E. Nelson Tim Chumley and Robbin Romberg199484216U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: Sinnard Reservoir and vicinity, ca 4.5 air mi WNW of Hawk Springs; ca 19 air mi SSW of Torrington.-104.347841.807713261338Clay slopes near the reservoir with scattered greaswood. Phenology: flowering & fruiting.RMRM654562 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33677B. E. Nelson Tim Chumley and Robbin Romberg199489221U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Rasmus Lee Lake ca 3 air mi W of Bessemer Mountain, ca 17 air mi WSW of Casper.-106.609242.739716431658Moist to wet areas created by siphon leakage. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33720B. E. Nelson Tim Chumley and Robbin Romberg199489221U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Rasmus Lee Lake ca 3 air mi W of Bessemer Mountain, ca 17 air mi WSW of Casper.-106.568542.71516061609Moist to wet flats along the creek. Phenology: flowering & fruiting.RMRM654563 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33720B. E. Nelson Tim Chumley and Robbin Romberg199489221U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Poison Spring Creek ca 3/4 air mi N of the North Platte River and ca 2 air mi SW of Bessemer Mountain, ca 16 air mi SW of Casper.-106.568542.71516061609Moist to wet flats along the creek. Phenology: flowering & fruiting.RMRM654564 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33799B. E. Nelson Tim Chumley and Robbin Romberg1994811223U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Richeau Creek between I-25 and Wyo Hwy 314, ca 3/4 air mi W to 1.5 air mi WSW of Slater; ca 14 air mi SSE of Wheatland.-104.837741.86415301548Large, coarse sand sand bar. Phenology: flowering & fruiting.RMRM654565 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33840B. E. Nelson Tim Chumley and Robbin Romberg1994811223U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Chugwater Creek, ca 0.5 air mi N of Bordeaux, ca 9.5 air mi SE of Wheatland.-104.837741.93731475Steep creek bank and sand bars. Phenology: flowering & fruiting.RMRM654566 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33912B. E. Nelson Tim Chumley and Robbin Romberg1994812224U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along the Laramie River above and below Chugwater Creek and along Chugwater Creek, ca 7.5 air mi NE of Wheatland.-104.858342.125613471353Riparian benches, streambanks and adjacent meadows. Phenology: flowering & fruiting.RMRM654567 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.33932B. E. Nelson Tim Chumley and Robbin Romberg1994812224U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Chugwater Creek below Antelope Gap Road, ca 3-3.3 air mi E of Wheatland.-104.89542.05441390Entrenched creek banks and adjacent meadows. Phenology: flowering & fruiting.RMRM654568 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34001B. E. Nelson1994818230U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Chivington Draw W of Egbert or County Road 154 ca 10 air mi N of Egbert; ca 13.3 air mi NW of Pine Bluffs.-104.2572341.3151616251640Gullies in the bluffs. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34227B. E. Nelson1994821233U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Antelope Creek and Ross or County Road 31, ca 31 air mi WNW of Bill; ca 50.5 air mi NNW of Douglas; ca 3.5 air mi SE of Ross.-105.82843.421615601567Large disturbed area in the bottom of a large dry wash. Phenology: flowering & fruiting.RMRM654569 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34227B. E. Nelson1994821233U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Bull Gulch and Ross or County Road 31, ca 31 air mi WNW of Bill; ca 50.5 air mi NNW of Douglas; ca 3.5 air mi SE of Ross.-105.82843.421615601567Large disturbed area in the bottom of a large dry wash. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34246B. E. Nelson1994821233U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Antelope Creek and Ross or County Road 31, ca 31 air mi WNW of Bill; ca 50.5 air mi NNW of Douglas; ca 3.5 air mi SE of Ross.-105.509643.39915601567Moist to wet meadows in the stream bottom. Phenology: flowering & fruiting.RMRM654570 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34246B. E. Nelson1994821233U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Sand Creek off Jenne Trail or County Road 34, ca 16.5 air mi NW of Bill, ca 44.5 air mi N of Douglas.-105.509643.39914451451Moist to wet meadows in the stream bottom. Phenology: flowering & fruiting.RMRM654571 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34262B. E. Nelson1994823235U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: ca 0.5 mi S of Horseshoe Creek along Horseshoe Creek or County Road 59 ca 15.5 air mi SW of Glendo; ca 27.5 air mi NNW of Wheatland.-105.137542.442614871512At the edge of pavement and on the right-of-way. Phenology: flowering & fruiting.RMRM654572 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34313B. E. Nelson Tim Chumley1994823235U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Rawhide Creek ca 2.3 air mi SW of Tea Kettle Rock and ca 0.5-1 air mi N of the Interstate Canal, ca 7 air mi NE of Lingle, ca 11.3 air mi NNW of Torrington.-104.261942.214112921295Clay flats along the creek. Phenology: flowering & fruiting.RMRM654573 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34369B. E. Nelson1994824236U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: along County Road 41, ca 2 air mi N of the North Platte River, ca 3.5 air mi ESE of Lingle; ca 6 air mi NW of Torrington.-104.279342.11741285Roadside, adjacent right-of-way and fence row. Phenology: flowering & fruiting.RMRM654574 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34409B. E. Nelson1994824236U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along County Road 21 ca 6 air mi E of the confluence of Red Cloud Slough and Rawhide Creek, ca 7.8 air mi ESE of Jay Em; ca 28 air mi N of Torrington.-104.221142.436514391442Roadside, adjacent right-of-way and fence row. Phenology: flowering & fruiting.RMRM654575 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34437B. E. Nelson1994824236U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along U.S. Hwy 85, ca 5.8 air mi S of Jay Em, ca 16.5 air mi N of Lingle.-104.345742.37381454Highway right-of-way. Phenology: flowering & fruiting.RMRM654576 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34478B. E. Nelson1994824236U.S.A.WyomingNiobraraSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Muddy Creek off Spanish Diggings or County Road 34 ca 3 air mi E of Converse County, ca 13.8 air mi SW of Manville, ca 20.5 air mi WSW of Lusk.-104.830642.655714871506Bushes and meadows in the stream bottom. Phenology: flowering & fruiting.RMRM654577 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34549B. E. Nelson1994828240U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: Bump-Sullivan Reservoir, ca 4 air mi S of Yoder; ca 15 air mi SSW of Torrington.-104.311441.86151307Weedy flats near a pond. Phenology: flowering & fruiting.RMRM654578 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.34573B. E. Nelson1994828240U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: at Cherry Creek Drain and S along a County Road ca 0.5 air mi NE of Fort Laramie Canal, ca 5 air mi W of Veteran, ca 14 air mi SW of Torrington.-104.421241.969412801292Roadside and adjacent right-of-way next to alfalfa field. Phenology: flowering & fruiting.RMRM654579 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.141Timothy W. Chumley1994817229U.S.A.WyomingLaramieLaramie Mountains: along Crow Creek W of County Road 109, ca 18 air mi W of Cheyenne; ca 11.1 air mi NE of Buford.-105.149241.216720212057On shores of spring-fed pond surrounded by willow thickets. Phenology: flowering & fruiting.RMRM654580 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.234Timothy W. Chumley1994819231U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Crow Creek E of County Road 217 ca 1/2 mi, ca 16.2 air mi ESE of Cheyenne.-104.508541.10631716Along creek. Phenology: flowering & fruiting.RMRM654581 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.419Timothy W. Chumley1994826238U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: along Bear Creek ca 1 air mi W of Wyo Hwy 151 crossing, ca 10 air mi S of Hawk Springs, ca 46 air mi NE of Cheyenne.-104.232841.63914541457Along wooded and entrenched stream with steep to vertical banks. Phenology: flowering & fruiting.RMRM638189 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10239Thomas Cramer Jane T. Kellett199582214U.S.A.WyomingSweetwaterGreen River Basin: ca 26.5 air mi WNW of Farson.-109.907342.25721402170Shale and sandstone canyonside with sparse Atriplex and sagebrush. Phenology: flowering.RMRM632395 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2890Thomas Cramer199484216U.S.A.WyomingSubletteGreen River Basin: edge of Green River, ca 1 air mi N of La Barge.-110.191342.2742006Riverside mudflats, meadows, and willows. Phenology: flowering.RMRM632394 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3158Thomas Cramer199488220U.S.A.WyomingLincolnGreen River Basin: Green River at Slate Creek confluence, ca 1/2 air mi NE of Fontenelle.-110.044241.98831951Riverside beneath shale bluff, surrounding greasewood and rabbitbrush desert. Phenology: flowering & fruiting.RMRM632393 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3464Thomas Cramer1994810222U.S.A.WyomingSubletteGreen River Basin: South Rim, ca 8 air mi NW of Warren Bridge.-110.224443.103622562591Douglas fir and lodgepole pine forest hillside, ridgetop meadows, and bottom sagebrush wetlands. Phenology: flowering.RMRM632392 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4201Thomas Cramer Ben and Becky Cramer1994819231U.S.A.WyomingSweetwaterGreen River Basin: Big Sandy Reservoir and River, ca 9.5 air mi N of Farson.-109.415342.25862042Reservoir edge sagebrush, riverside meadows and sagebrush. Phenology: flowering & fruiting.RMRM632391 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4431Thomas Cramer Ben and Becky Cramer1994821233U.S.A.WyomingSweetwaterGreen River Basin: Big Sandy River, ca 1 air mi SW of Farson.-109.4642.09812003Riverside meadows, sagebrush, and open hillsides. Phenology: flowering.RMRM638190 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8383Thomas Cramer Jane T. Kellett1995718199U.S.A.WyomingSweetwaterGreen River Basin: ca 5.5 air mi E of Fontenelle Dam.-109.95242.0311990Sandy roadside with occasional clay patches. Phenology: flowering.RMRM372769 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11683B. E. Nelson1984912256U.S.A.WyomingCrookBlack Hills: Bear Lodge Mountains: Reuter Campground, ca 3 air mi NW of Sundance.-104.098144.65671036Between the road and fence. Phenology: fruiting.RMRM372768 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11906B. E. Nelson1984913257U.S.A.WyomingCrookBlack Hills: Bear Lodge Mountains: along a canyon leading into Beaver Creek, ca 0.8 air mi NW of Alva, ca 7.5 air mi ENE of Hulett.-104.447544.69751250Meadow above the canyon. Phenology: fruiting.RMRM372767 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11962B. E. Nelson1984916260U.S.A.WyomingCrookBlack Hills: along Boundary Gulch, ca 4.8 air mi SSE of Beulah, ca 16.3 air mi ENE of Sundance.-104.062244.48081250Roadside. Phenology: fruiting.RMRM372766 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.12044B. E. Nelson1984918262U.S.A.WyomingCrookBlack Hills: Belle Fourche River just below Keyhole Dam, ca 12 air mi NE of Moorcroft.-104.769444.39081219Sandy flats along river. Phenology: fruiting.RMRM372765 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.12048B. E. Nelson1984918262U.S.A.WyomingCrookBlack Hills: Belle Fourche River just below Keyhole Dam, ca 12 air mi NE of Moorcroft.-104.769444.39081219Sandy flats along river. Phenology: flowering & fruiting.RMRM372872 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.12126B. E. Nelson1984918262U.S.A.WyomingCrookBlack Hills: Little Houston Creek along I-90; ca 11.8 air mi SW of Sundance.-104.5883344.318061341Stream bottom. Phenology: fruiting.RMRM392296 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.S-60-368C. S. Gilbert1960521142U.S.A.WyomingWeston3.6 mi NW of Four Corners, along Wyo Hwy 585.-104.208644.1183Phenology: flowering & fruiting.RMRM372783 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1885Hollis Marriott198285217U.S.A.WyomingWeston[location and coordinates withheld]1341Disturbed soil near lake. Phenology: fruiting.RMRM372782 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5170Hollis Marriott1983728209U.S.A.WyomingCrookBlack Hills, Redwater Creek ca 2.2 air mi WNW of Beulah.-104.140344.55331097Deciduous woods near creek. Phenology: flowering.RMRM372781 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5273Hollis Marriott198382214U.S.A.WyomingCrookBlack Hills: Goldie Divide near junction of Goldie and New Haven roads, ca 5 air mi NW of Hulett.-104.670344.72331371Ponderosa pine-bur oak forest, roadside. Phenology: fruiting.RMRM372780 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5536Hollis Marriott198384216U.S.A.WyomingCrookBlack Hills, Inyan Kara Creek E of HK Divide, ca 15 air mi W of Sundance.-104.688944.39141280Grassland, roadside. Phenology: fruiting.RMRM372779 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5769Hollis Marriott1983824236U.S.A.WyomingCrookBlack Hills: Houston Creek where it turns south (near Harvey Divide), ca 10 air mi W of Sundance.-104.588744.40421402Grassland, reservoir margins. Phenology: fruiting.RMRM372778 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5922Hollis Marriott1983829241U.S.A.WyomingCrook[location and coordinates withheld]1097Deciduous woods in draw. Phenology: fruiting.RMRM372777 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5961Hollis Marriott1983829241U.S.A.WyomingCrook[location and coordinates withheld]1097Big sagebrush grassland. Phenology: fruiting.RMRM372776 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6039Hollis Marriott198391244U.S.A.WyomingCrook[location and coordinates withheld]1280Margins of reservoir in grassland. Phenology: fruiting.RMRM372775 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6071Hollis Marriott198391244U.S.A.WyomingCrookBlack Hills: Keyhole Reservoir, Cottonwood Creek and Dry Cove Campground, ca 11.5 air mi NE of Moorcroft.-104.769444.36191250Disturbed soil of creek channel. Phenology: fruiting.RMRM336126 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.811Hollis Marriott1981716197U.S.A.WyomingCrookDevils Tower National Monument: ca 75 yds NW of Joyner Ridge parking lot.-104.72544.59921280Occasional on disturbed, well-drained soil along roadside with Agropyron smithii. Phenology: buds.RMRM372774 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8732Hollis Marriott Dennis Horning198488221U.S.A.WyomingWestonBlack Hills: Elk Mountain area, Mix Spring, ca 14.5 air mi SSE of Newcastle.-104.070543.67671463Draw below spring. Phenology: fruiting.RMRM372773 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8924Hollis Marriott1984810223U.S.A.WyomingWeston[location and coordinates withheld]1783Grassland, in draw between limestone sinkhole and reservoir. Phenology: fruiting.RMRM372772 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9069Hollis Marriott1984814227U.S.A.WyomingWeston[location and coordinates withheld]1493Sagebrush-grassland (Artemisia tridentata), in draw below culvert. Phenology: fruiting.RMRM372771 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9164bHollis Marriott1984818231U.S.A.WyomingCrookBlack Hills: Inyan Kara Mountain (east half); ca 13.5 air mi S of Sundance.-104.344744.201391615Reservoir in grassland east of mountain, on banks. Phenology: fruiting.RMRM372770 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9287Hollis Marriott1984821234U.S.A.WyomingCrook[location and coordinates withheld]975In draw with oak and green ash. Phenology: fruiting.RMRM313993 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.V-3Ronald G. Schreibeis1976730212U.S.A.WyomingCrookNE of Aladdin.-104.183644.64Creek bottom. Phenology: flowering & fruiting.RMRM372560 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.16309Ronald L. Hartman1983715196U.S.A.WyomingCrookBlack Hills: ca 3 air mi NNE of Aladdin.-104.179444.68641097Prairie, wooded stream bottom, and sandstone outcrops; roadside. Phenology: fruiting.RMRM372559 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.18458Ronald L. Hartman1984717199U.S.A.WyomingCrookBlack Hills: lower slopes of Hooker Peak and plains to the NW, 7-8 air mi SSE of Sundance.-104.304444.31971554Plains, Pinus ponderosa wooded slopes, moist open drainages and stock pond; moist drainage. Phenology: fruiting.RMRM391298 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1281Robert J. Hill1973820232U.S.A.WyomingCampbellLittle Box Elder Cave.-105.723342.75871676Growing in the draws, slopes, and meadows near the cave. Phenology: flowering & fruiting.RMRM391308 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1376Robert J. Hill1973823235U.S.A.WyomingNatronaDevils Gate, Sweetwater River near the Sun Bell Ranch.1829Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.76398B. E. Nelson2008815228U.S.A.MontanaCarbonBighorn Basin: along a tributary of South Fork Bridger Creek just W of Pryor Mountain Road, ca 8 air mi SE of Bridger.-108.815545.20712621323Along stream through redbeds and adjacent wet to dry meadows dominated by Glycyrrhiza. Phenology: flowering & fruiting.RMUSFS882902 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.76597B. E. Nelson2008819232U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: between Tibbs Hollow and Mill Hollow just S of Tie Flat or Forest Road 2104 on the lower slope of Big Pryor Mountain, ca 25 air mi ESE of Bridger.-108.452545.1572134Disturbed area on red clay. Phenology: flowering.RMUSFS882827 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6986B. E. Nelson1980810223U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: Gooseberry Hollow above Crooked Creek Canyon, ca 26 air mi SE of Bridger.-108.430745.1271890Open Douglas fir forest along the stream. Phenology: flowering.RMRM831430 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4040Brian Elliott1998723204U.S.A.ColoradoLas AnimasWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Exit 23 on I-25.-104.529937.28741859Prairie-grassland with Artemisia and Sarcobatus. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2801Bernadette Kuhn200783215U.S.A.ColoradoBacaComanche National Grassland: Southeastern Colorado Research Station, 7.5 mi WSW of Springfield.-102.742837.36911411House site and pasture dominated by Aristida sp. and Buchloë dactyloides. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2997Bernadette Kuhn Amy Tomson200784216U.S.A.ColoradoBacaComanche National Grassland: ca 15 air mi WSW of Springfield.-102.905137.28011496Roadside right of way near pump station. Shortgrass prairie dominated by Aristida purpurea, Sporobolus airoides and Elymus spp. Sandy soil. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3064Bernadette Kuhn Joe Rankin200786218U.S.A.ColoradoLas AnimasComanche National Grassland: Purgatoire River Valley, ca 26.5 air mi SSW of La Junta.-103.609737.61351345Hills flanking river vally, dominated by Juniperus monosperma, Rhus aromatica, and Opuntia sp. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3116Bernadette Kuhn Joe Rankin200787219U.S.A.ColoradoOteroComanche National Grassland: ca 16 air mi SSW of La Junta.-103.61737.75681449Rocky, exposed shale barrens dominated by Stipa sp., Opuntia sp., and Eriogonum sp. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3141Bernadette Kuhn Joe Rankin200787219U.S.A.ColoradoOteroComanche National Grassland: ca 13 air mi S of La Junta along Forest Road 802.-103.514837.79521350In heavily grazed pasture with stock pond. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3372Bernadette Kuhn Joe Rankin2007811223U.S.A.ColoradoOteroComanche National Grassland: ca 14 air mi SW of La Junta.-103.766537.88591407Roadside near old irrigation canal. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3427Bernadette Kuhn Joe Rankin2007812224U.S.A.ColoradoOteroComanche National Grassland: near Timpas Creek, ca 30.5 air mi SW of La Junta.-103.956537.69431458Along wet drainage ditch. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3468Bernadette Kuhn Joe Rankin2007812224U.S.A.ColoradoOteroComanche National Grassland: N of Lower Sheep Canyon, ca 26 air mi SW of La Junta.-103.839937.69151505Rocky uplands near canyon. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3515Bernadette Kuhn Joe Rankin2007813225U.S.A.ColoradoLas AnimasComanche National Grassland: Iron Canyon, ca 27 air mi S of La Junta.-103.645637.60271505Canyon with sandy soil and Juniperus monosperma. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3534Bernadette Kuhn Joe Rankin2007813225U.S.A.ColoradoOtero[location and coordinates withheld]1286Dakota sandstone at surface with sandy soil. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3594Bernadette Kuhn Joe Rankin2007825237U.S.A.ColoradoOteroComanche National Grassland: ca 15 air mi S of La Junta.-103.47837.7791286Weedy canyonside dominated by Juniperus monosperma. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3643Bernadette Kuhn Joe Rankin2007825237U.S.A.ColoradoLas AnimasComanche National Grassland: Tobe Creek, 2.5 mi S of Tobe; ca 54.5 air mi S of La Junta.-103.611837.19911651Along creek. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3728Bernadette Kuhn Joe Rankin2007826238U.S.A.ColoradoOteroComanche National Grassland: Browning and Reese Reservoir No 1, ca 17.5 air mi SW of La Junta.-103.748537.7961869Dry stock pond. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3740Bernadette Kuhn Joe Rankin2007826238U.S.A.ColoradoOteroComanche National Grassland: ca 31 air mi SW of La Junta.-103.986337.71221891Limestone shale hills with scattered Juniperus virginiana. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6197Bernadette Kuhn200878190U.S.A.ColoradoOtero[location and coordinates withheld]1291Rock outcrops dominated by Stipa and Aristida. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6368Bernadette Kuhn200879191U.S.A.ColoradoOteroComanche National Grassland: ca 32 air mi SW of La Junta.-103.970637.6791482Rocky prairie and adjacent ditch dominated by Bothriochloa laguroides. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6599Bernadette Kuhn2008714196U.S.A.ColoradoOtero[location and coordinates withheld]1296Roadside dominated by Bothriochloa laguroides and Cucurbita foetidissima. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6655Bernadette Kuhn2008714196U.S.A.ColoradoOtero[location and coordinates withheld]1356Dominated by Melilotus officinalis, near large Ulmus. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7809Bernadette Kuhn Don Hazlett2008913257U.S.A.ColoradoOtero[location and coordinates withheld]1503At spring, Dakota sandstone canyon dominated by Prunus, Ribes, and Rhus. Phenology: flowering & fruiting.RMRM900398 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7022Ben Legler200783215U.S.A.ColoradoLas AnimasVermejo Park Ranch: in Long Canyon 0.65 air mi N of mouth of Joe Baker Canyon; 1.1 air mi N of New Mexico and 15 air mi SW of Raton.-104.699055637.010252118Rocky bar adjacent to flowing stream, with Verbascum thapsus, Ambrosia, Ratibida columnifera, grasses. Flowers yellow; scattered on stream bar.RMRM900397 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7114Ben Legler200786218U.S.A.New MexicoColfaxVermejo Park Ranch: along Dillon Canyon Road (NM Hwy 476) opposite mouth of Gardiner Canyon, on southwest side of golf course on southwest side of Raton.-104.472027836.88652019Dry weedy road shoulders, with Helianthus annuus, Ericameria nauseosa, grasses. Flowers yellow; scattered. Phenology: flowering & fruiting.RMRM900396 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7384Ben Legler200789221U.S.A.New MexicoColfaxVermejo Park Ranch: along Crow Canyon Road 0.4 air mi SE of Koehler townsite.-104.612722236.737138891972Old coal mine spoils, sparsely vegetated with Ambrosia acanthicarpa, Ericameria nauseosa, numerous grass species. Flowers yellow; uncommon. Phenology: flowering & fruiting.RMRM831429 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5661Brian Elliott1998819231U.S.A.ColoradoFremont[location and coordinates withheld]1722Roadside and prairie. Phenology: flowering & fruiting.RMRM831428 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5723Brian Elliott1998821233U.S.A.ColoradoLas AnimasWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: on Colo Hwy 389 S of Branson at the New Mexico state line.-103.876937.01071981Quercus. Phenology: flowering & fruiting.RMRM900395 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10506Ben Legler2008810223U.S.A.New MexicoColfaxVermejo Park Ranch: on south side of Vermejo River 2.2 air mi due W of I-25 and 3.5 air mi SW of Maxwell.-104.60163136.5093121799Moist, silty river bottoms with Tamarix chinensis, Helianthus annuus, Kochia scoparia, and Mirabilis nyctaginea. Heads yellow, fading to purple, 1-1.5 cm across; taprooted annual, stems to over 1 meter tall, branched in inflorescence; local on edge of river bottoms. Photographed. Specimen GPS: 36.509312, -104.601631. Phenology: flowering & fruiting.RMRM900394 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10864Ben Legler2008817230U.S.A.ColoradoLas AnimasVermejo Park Ranch: in Right Hand Fork Martinez Canyon 1/2 air mi up canyon from junction with Left Hand Fork Martinez Canyon; 17.7 air mi WSW of Trinidad.-104.73673237.0346532192Canyon-bottom grassland; deep fine soil, with Ratibida columnifera, Bouteloua gracilis, Verbascum thapsus, Verbena macdougalii, and Chenopodium. Flowers yellow, fading to purple; uncommon. Specimen GPS: 37.034649, -104.736656. Phenology: flowering & fruiting.RMUSFS867390 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.73797B. E. Nelson200783215U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Big Bear Creek at crossing of Cliff Creek or Forest Road 6989 ca 1.5 air mi NW of Wheeler Mountain, ca 11.5 air mi SSW of Bozeman.-111.111945.517617861841Logging road and other disturbed areas in and near the canyon bottom. Phenology: flowering.RMUSFS867391 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.73882B. E. Nelson200783215U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: above Big Bear Creek at a tributary along Cliff Creek or Forest Road 6989 ca 2 air mi NW of Wheeler Mountain, ca 11.5 air mi SSW of Bozeman.-111.120145.519518411853Steep bank of road fill in Douglas fir-lodgepole pine forest. Phenology: flowering.RMRM938642 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4211Emily Elliott Brian Elliott200783215U.S.A.MontanaSweet GrassAbsaroka Range/Beartooth Mountains: Gallatin National Forest: along Forest Road 6639 and the Boulder River, ca 22 air mi SE of Livingston.-110.20145.473116081609Disturbed roadside. Phenology: fruiting.RMRM938643 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4240Emily Elliott Brian Elliott200783215U.S.A.MontanaSweet GrassAlong Airport Road, NE of Big Timber Airport, ca 1.5 air mi SSW of Big Timber.-109.965445.8151347Along road cut and packing area, in cobbley soil. Phenology: flowering & fruiting.RMRM938644 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4264Emily Elliott Brian Elliott200783215U.S.A.MontanaParkAbsaroka Range: between I-90 and the Yellowstone River in McAdows Canyon, ca 14.5 air mi ENE of Livingston.-110.262145.70144280Disturbed roadside, railroad tracks and river bank. Phenology: fruiting.RMRM938645 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4273Emily Elliott Brian Elliott200783215U.S.A.MontanaParkAbsaroka Range: between I-90 and the Yellowstone River in McAdows Canyon, ca 14.5 air mi ENE of Livingston.-110.262145.70144280Disturbed roadside, railroad tracks and river bank. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.88270Ronald L. Hartman2008812225U.S.A.MontanaMeagherJunction of U.S. Hwys 12 and 89, ca 2.5 air mi ENE of White Sulphur Springs.-110.85646.56561567Roadside with stream. Phenology: flowering.RMUSFS867388 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6787Emily Elliott Brian Elliott200882215U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: from West Boulder Trailhead, along trail and West Boulder River to West Boulder Meadows, ca 26-27 air mi SW of Big Timber.-110.308245.546616821737Moist aspen grove with Pinus contorta encroachment and a mixed forb understory. Phenology: fruiting.RMUSFS867389 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6854Emily Elliott Brian Elliott200883216U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: near West Boulder River above West Boulder Meadows, ca 29 air mi SW of Big Timber.-110.340845.514917561829Dolomite cliffs and loose talus fields below. Phenology: flowering.RMUSFS886319 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.78192B. E. Nelson2009725206U.S.A.MontanaPowder RiverCuster National Forest: Ashland District: vicinity of Cow Creek Camp/ Picnicground on Cow Creek ca 5.5 air mi W of Fort Howes Work Center, ca 25 air mi S Ashland.-106.244745.312911731219Open, southerly-facing slope with scattered ponderosa pine and adjacent open ridge-top. Phenology: flowering.RMUSFS886318 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.78377B. E. Nelson2009728209U.S.A.MontanaCarterAlong North Butte Creek between Hamilton Creek and Little Missouri River on the south side of Mont Hwy 323, ca 2 air mi NW of Albion; ca 13.5 air mi N of Alzada.-104.309645.20510091012Dry stream bed and adjacent steep banks and bench with green ash and occasional boxelder and snowberry thickets. Phenology: flowering.RMUSFS886316 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.78422B. E. Nelson2009730211U.S.A.South DakotaHardingCuster National Forest: North Cave Hills: Browns Pond and vicinity on Campbell Creek, ca 6.5 air mi WSW of Ludlow; ca 15 air mi N of Buffalo.-103.498345.7949884896Weedy slopes and flats above the reservoir. Phenology: flowering & fruiting.RMUSFS886312 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.78750B. E. Nelson200984216U.S.A.MontanaCarterCuster National Forest: Long Pines: on the divide SE of Devils Canyon, ca 21 air mi SE of Ekalaka.-104.227945.680612071243Slopes and ravines of a burned area. Phenology: flowering & fruiting.RMUSFS886311 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.78924B. E. Nelson200984216U.S.A.MontanaCarterCuster National Forest: Long Pines: Iron Spring and vicinity and down stream, ca 18 air mi SE of Ekalaka.-104.225145.755610421079Pocket on sandstone cliff. Phenology: flowering.RMUSFS886357 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1586Hans Hallman200974185U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: along Beaver Creek Road or Forest Road 4133 at and around Road Creek Reservoir, ca 2 air mi NW of Holiday Campground and ca 14.5 air mi ENE of Ashland.-105.997745.653210971109In and around drainage and reservoir, dominated by sedges and grasses. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2108Hans Hallman2009713194U.S.A.South DakotaHardingOn the west side of The Jumpoff, ca 1 air mi E of County Road 897 and ca 3 air mi S of SD Hwy 20, ca 7.5 air mi ESE of Camp Crook.-103.822145.5349954975Badlands with interspersed grass and sagebrush. Phenology: flowering & fruiting.RMUSFS886355 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2487Hans Hallman2009717198U.S.A.South DakotaHardingCuster National Forest: Slim Buttes: just SW of Summit Pass on SD Hwy 79, ca 23.5 air mi SE of Buffalo.-103.177345.371310061051Grass and Melilotus-dominated south-facing slope. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2707Hans Hallman2009722203U.S.A.MontanaPowder RiverCa 0.5 air mi E of Mont Hwy 484 or Otter Creek Road, ca 6.5 air mi N of Fort Howes and ca 15 air mi SSE of Ashland.-106.16245.39359871003Grass-dominated grazing land. Phenology: flowering.RMUSFS886354 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2744Hans Hallman2009723204U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in and around Seymour Reservoir, ca 0.5 air mi N of Taylor Creek or Forest Road 4127, ca 7 air mi SE of Fort Howes and ca 27 air mi SSE of Ashland.-106.031645.246511341158About reservoir. Phenology: flowering.RMUSFS886356 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2879Hans Hallman2009725206U.S.A.South DakotaHardingCuster National Forest: Slim Buttes: in the vicinity of Rimrock Spring, ca 1 air mi S of Forest Road 3151, ca 7.5 air mi SE of Summit Pass on SD Hwy 79 and ca 31 air mi SE of Buffalo.-103.037245.3141920960Mixed grass and badlands. Phenology: flowering & fruiting.RMUSFS886353 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2913Hans Hallman2009726207U.S.A.South DakotaHardingCuster National Forest: Slim Buttes: in the vicinity of Willard Gap off of Rimrock Trail or Forest Road 3150, ca 3 air mi ESE of Summit Pass on SD Hwy 79 and ca 26.5 air mi SE of Buffalo.-103.106645.349310301060Near the rim of a cliff with scattered ponderosa pine, junipers, and grasses. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3107Hans Hallman2009728209U.S.A.MontanaCarterIn and around a drainage near the head of Ewalt Draw, off of Ridge Road, ca 7 air mi WNW of its junction with Mont Hwy 323, ca 25.5 air mi S of Ekalaka.-104.568245.528610511082Rolling grazing land dominated by sagebrush and grasses. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3180Hans Hallman2009728209U.S.A.MontanaCarterCa 0.5 air mi S of Ridge Road at the head of Keith Creek, ca 4 air mi SE of Saddle Butte and ca 23.5 air mi SSW of Ekalaka.-104.747745.582510421060Mixed grass and badlands on slope within gully. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3236Hans Hallman2009728209U.S.A.MontanaCarterJust off of Mont Hwy 323 at Skull Creek, ca 3 road mi S of junction with Tie Creek Road, ca 23.5 air mi SSE of Ekalaka.-104.38145.5679931003Mixed grass and badlands. Phenology: flowering & fruiting.RMUSFS884506 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3521AHans Hallman2009730211U.S.A.MontanaCarterCuster National Forest: Ekalaka Hills: in the vicinity of Oliver Springs, ca 0.5 air mi N of Mont Hwy 323 at Conger Hill, ca 5.5 air mi SE of Ekalaka.-104.454545.840711091121Hardwood draw dominated by green ash and grasses. Phenology: flowering & fruiting.RMUSFS886352 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3536Hans Hallman200981213U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: Cook Mountain Hiking and Riding Area: in the vicinity of Cliff Spring and areas SE, W of Forest Road 4772, ca 9 air mi NE of Ashland.-106.135145.671310791091Draw dominated by boxelder, ponderosa pine, and snowberry. Phenology: flowering & fruiting.RMUSFS886351 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3633Hans Hallman200982214U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: just NW of unnamed 4WD road ca 1.5 air mi SW of The Breaks Coulee, ca 15 air mi NE of Ashland.-106.103145.77929691000Mixed grass and badlands slope. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3675Hans Hallman200982214U.S.A.MontanaCarterJust E of Beaver Creek Road ca 1.5 air mi NW of Red Butte, ca 15.5 air mi NNE of Ashland.-106.160445.7987963981Grass-dominated upland with scattered ponderosa pine. Phenology: flowering.RMUSFS886350 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3728Hans Hallman200984216U.S.A.South DakotaHardingCuster National Forest: South Cave Hills: in and around Timber Canyon, between Forest roads 3113 and 3137, ca 11.5 air mi N of Buffalo.-103.555645.7492975981Grass-dominated meadow. Phenology: flowering.RMUSFS886349 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4119Hans Hallman2009813225U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: just N of Fifteenmile Creek or Forest Road 4094, ca 1 air mi NNE of Dalzells Spring, ca 21 air mi ESE of Ashland.-105.927745.403311701207Green ash-dominated meadow with scattered ponderosa pine. Phenology: flowering & fruiting.RMUSFS886348 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4233Hans Hallman G. Gust2009816228U.S.A.South DakotaHardingCuster National Forest: North Cave Hills: in a tributary of Schleichart Draw above Schleichart Draw Reservoir, W of Forest Road 3130, ca 17 air mi NNE of Buffalo.-103.470745.8311036Grass and chokecherry-dominated east-facing slope with rock outcrops. Phenology: flowering & fruiting.RMUSFS884505 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4397Hans Hallman G. Gust2009816228U.S.A.MontanaCarterCuster National Forest: Long Pines: just W of Forest Road 3117, in and around unnamed pond in Spring Canyon, ca 16 air mi NW of Camp Crook, SD.-104.219245.724311031134Above margin of unnamed still-water pond. Phenology: flowering & fruiting.RMUSFS886347 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4495Hans Hallman G. Gust2009818230U.S.A.MontanaCarterCuster National Forest: Ekalaka Hills: in and around McNab Pond, at terminus of Forest Road 1401, ca 0.5 air mi NE of Mont Hwy 323, ca 7 air mi SE of Ekalaka.-104.431445.836210421073In and around pond dominated by Scirpus and Typha spp. and grasses on its margin. Phenology: flowering & fruiting.RMUSFS886346 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.4690Hans Hallman G. Gust2009818230U.S.A.MontanaCarterCuster National Forest: Ekalaka Hills: in the vicinity of Gundlach Well off of Forest Road 3103, ca 6 air mi ESE of Ekalaka.-104.436745.865811581207Grass and ponderosa pine-dominated open woodland. Phenology: flowering & fruiting.RMRM831411 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.62428Ronald L. Hartman1998722203U.S.A.ColoradoLas AnimasWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Picketwire Valley, ca 1 mi E of Cordova Plaza.-104.80237.12722042Roadside. Phenology: flowering & fruiting.RMRM831427 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.63028Ronald L. Hartman Craig Freeman1998813225U.S.A.ColoradoPuebloWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: Lake Isabel Work Center NW to county line near San Isabel.-105.035737.991326522682Edge of woods and roadside. Phenology: flowering.RMRM831426 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.63164Ronald L. Hartman Craig Freeman1998813225U.S.A.ColoradoPuebloWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: ca 1.5 road mi E of Rye.-104.907637.91841951Roadside and road cut. Phenology: flowering.RMRM831425 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.63679Ronald L. Hartman1998817229U.S.A.ColoradoLas AnimasWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: I-25 frontage road to Chicosa Canyon, SE of Hoehne exchange.-104.511837.28741859Roadside. Phenology: flowering & fruiting.RMRM841432 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.Brian F. Jacobs2006828240U.S.A.New MexicoSandovalJemez Mountains: Bandelier National Monument: lower Canyon de los Frijoles along lower Falls Trail.1676Phenology: flowering.RMRM625106 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.49019Ronald L. Hartman1994731212U.S.A.WyomingTetonGros Ventre Area: ridge just N of Lower Horse Creek, ca 1.5 air mi NNE of Hoback Junction.19201981Roadside, meadow, and cliffs. Phenology: flowering & fruiting.RMRM831182 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10204Brian Elliott Pete Schneider1999731212U.S.A.ColoradoCostillaWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: San Luis Valley: Forbes Trinchera Ranch: ca 2 mi E of Fort Garland on U.S. Hwy 160.-105.394437.42922408Along the railroad right-of-way and roadside. Phenology: flowering & fruiting.RMRM831181 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10256Brian Elliott Pete Schneider1999731212U.S.A.ColoradoCostillaWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: San Luis Valley: ca 0.5 air mi N of New Mexico on Colo Hwy 159.-105.519437.00282347Roadside. Phenology: flowering & fruiting.RMUSFS886333 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6225Hans Hallman2010715196U.S.A.MontanaCarterCuster National Forest: Ekalaka Hills: just E of Forest Road 3814, ca 1 air mi ENE of Smith Well, ca 5.5 mi SSW of Ekalaka.-104.566145.815411891225Open ponderosa pine forest in historic burn with thick stands of regenerating pine up to 15 ft. tall; associates include Juniperus, Rhus, and grasses. Phenology: flowering.RMUSFS886332 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6380Hans Hallman2010718199U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Suicide Pass near Forest Road 4777, ca 1 air mi N of U.S. Hwy 212, ca 18.5 air mi E of Ashland.-105.894245.563412191256Ponderosa pine-dominated woodland. Phenology: flowering.RMUSFS886331 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6541Hans Hallman2010721202U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Cabin Spring near the junction of Forest roads 4425 and 4776D, ca 1.5 air mi N of U.S. Hwy 212, ca 15 air mi E of Ashland.-105.955445.575811121158Ponderosa pine woodland with grass-dominated understory. Phenology: flowering.RMUSFS886330 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6582Hans Hallman2010723204U.S.A.South DakotaHardingCuster National Forest: Slim Buttes: in the vicinity of Road Draw Spring No. 2, SE of JB Pass, E of Forest Road 3148, ca 20 air mi SE of Buffalo.-103.21445.407410421060In the vicinity of hardwood draw with green ash, boxelder, and chokecherry. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6753Hans Hallman2010725206U.S.A.MontanaCarterJust S of Powderville Road, ca 2.5 air mi E of Powder River County, ca 20 air mi WSW of Ekalaka.-104.925645.7694948981Badlands. Phenology: flowering.RMUSFS886329 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6906Hans Hallman2010728209U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Dry Gulch Reservoir E of Forest Road 4432D, ca 3.5 air mi E of Fort Howes.-106.078645.301311701225Grass and sagebrush-dominated steppe. Phenology: flowering & fruiting.RMUSFS886328 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.6945Hans Hallman2010728209U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Dry Gulch Reservoir E of Forest Road 4432D, ca 3.5 air mi E of Fort Howes.-106.085645.298911461170Cornus and Toxicodendron-dominated draw with green ash. Phenology: flowering.RMUSFS886327 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7083Hans Hallman2010730211U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in Bridge Canyon, ca 1 air mi E of Taylor Butte, ca 2 air mi ESE of Fort Howes.-106.117945.2869East-facing slope in hardwood draw with Prunus and grass-dominated understory. Phenology: flowering & fruiting.RMUSFS886326 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7162Hans Hallman2010731212U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of South Fork Bloom Creek, just N of Bloom Creek Road, ca 3 air mi ESE of Diamond Butte, ca 14.5 air mi ESE of Fort Howes.-105.874545.236311091121Grass and sagebrush-dominated steppe. Phenology: flowering & fruiting.RMUSFS886325 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7286Hans Hallman201085217U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: SW of the junction of Forest roads 4769 and 4427, ca 3 air mi S of Liscom Butte, ca 16 air mi ENE of Ashland.-105.980245.700211091207Ponderosa pine woodland with grass-dominated understory and moist draws dominated by green ash and hawthorn. Phenology: flowering & fruiting.RMUSFS886324 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7321Hans Hallman201086218U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: along Forest Road 47696 between Sartin Draw Reservoir and Sartin Draw Spring, ca 16 air mi NE of Ashland.-105.992845.721310481085In green ash and Crataegus-dominated draw surrounded by open ponderosa pine woodland with grass-dominated understory. Phenology: flowering.RMUSFS886323 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7341Hans Hallman2010810222U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Mud Turtle Reservoir, N of Forest Road 4432, ca 3 air mi NW of Diamond Butte, ca 25.5 air mi SE of Ashland.-105.971845.285311821213Grazed draw dominated by green ash and Symphoricarpos. Phenology: flowering & fruiting.RMRM831177 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10426Brian Elliott Elizabeth Mark199985217U.S.A.ColoradoFremontWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: ca 2 air mi up Box Canyon, ca 5 air mi SE of Salida on south side of U.S. Hwy 50.-105.925538.47422134Riparian, Pinus edulis. Phenology: flowering.RMUSFS886322 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7459Hans Hallman2010811223U.S.A.MontanaRosebudCuster National Forest: Ashland Ranger District: Tongue River Breaks Hiking and Riding Area: along North Fork Poker Jim Creek, ca 3.5 air mi N of Poker Jim Butte, ca 15.5 air mi SSW of Ashland.-106.367245.38411581231Southwest-facing rocky slope dominated by grasses. Phenology: flowering & fruiting.RMUSFS886321 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7510Hans Hallman2010815227U.S.A.MontanaRosebudCuster National Forest: Ashland Ranger District: Tongue River Breaks Hiking and Riding Area: in the vicinity of Black Eagle Spring N of Forest Road 4023, ca 3.5 air mi WNW of Poker Jim Butte, ca 19 air mi SSW of Ashland.-106.430445.341711821207Hardwood draw dominated by Crataegus and Prunus. Phenology: flowering & fruiting.RMUSFS886320 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7575Hans Hallman2010815227U.S.A.MontanaRosebudCuster National Forest: Ashland Ranger District: Tongue River Breaks Hiking and Riding Area: in the vicinity of Black Eagle Spring N of Forest Road 4023, ca 3.5 air mi WNW of Poker Jim Butte, ca 19 air mi SSW of Ashland.-106.430445.341711821207Hardwood draw dominated by Crataegus and Prunus. Phenology: flowering & fruiting.RMRM831176 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10488Brian Elliott Elizabeth Mark199985217U.S.A.ColoradoCusterWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Reed Gulch, ca 9 air mi NW of Westcliffe, at the junction of Colo Hwy 69 and County Road 203.-105.566438.23942323Roadside. Phenology: flowering & fruiting.RMRM831175 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10510Brian Elliott Elizabeth Mark199987219U.S.A.ColoradoPueblo[location and coordinates withheld]1783Vacant city lot, highly disturbed. Phenology: flowering & fruiting.RMRM831174 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10623Brian Elliott Elizabeth Mark199989221U.S.A.ColoradoLas Animas[location and coordinates withheld]2012Stream bottom, mixed grass and forbs. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.80430B. E. Nelson Joseph L. M. Charboneau2010725206U.S.A.MontanaPhillipsUpper Missouri River Breaks National Monument: along Bull Creek and badlands to the W, ca 0.5 mi below the confluence with Winter Creek, ca 16 air mi SW of Hays; ca 62 air mi SW of Malta.-108.879647.7953762914Clay flats in the canyon bottom. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.80554B. E. Nelson2010727208U.S.A.MontanaPhillipsAlong Harb Road at an unnamed coulee, ca 23 air mi SSW of Saco; ca 25 air mi ESE of Malta.-107.447848.1428743750In and along an old road in sandy clay. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.80928B. E. Nelson201081213U.S.A.MontanaPhillipsWhitewater Lake Wildlife Management Area: at Whitewater Reservoir off of Border Road, ca 5.5 air mi N of Whitewater; ca 36 air mi NNE of Malta.-107.631748.8416731734Dry bed of former reservoir covered with Hordeum and Kochia. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.80943B. E. Nelson2010910253U.S.A.MontanaPhillipsLittle Rocky Mountains: ridge between Mission Creek and Damon Hill above King Creek, ca 5.5 air mi SE of Hays; ca 46.5 air mi SW of Malta.-108.615347.927314631487Edge of road and adjacent open areas. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.81033B. E. Nelson2010911254U.S.A.MontanaPhillipsLittle Rocky Mountains: along South Big Horn Creek NE of Damon Hill, ca 5-5.5 air mi SE of Hays; ca 46 air mi SW of Malta.-108.623647.934912921341Rocky gravel bars and flats in the creek bed. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.81368B. E. Nelson2010919262U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: The Pines Recreation Area: end of Fifth Ridge at Fort Peck Lake, ca 15 air mi SW of Fort Peck; ca 26.5 air mi S of Glasgow.-106.612847.8205676689Flats and low slope along the beach. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.81425B. E. Nelson2010919262U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: at Bonetrail Boat Ramp on Fort Peck Lake, ca 47 air mi SW of Glasgow.-107.248647.6753685731Flats and low slopes along the reservoir. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.81552B. E. Nelson2010921264U.S.A.MontanaPhillipsPearce Waterfowl Production Area: north of Old U.S. Hwy 2, ca 13 air mi ENE of Malta.-107.627948.4383682Gravel parking lot. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1469Joseph L. M. Charboneau2010711192U.S.A.MontanaPhillipsUpper Missouri River Breaks National Monument: on Antelope Ridge and in East Fork Hideaway Coulee, ca 4 air mi NNE of Grand Island, ca 17 air mi SW of Zortman; ca 61 air mi SW of Malta.-108.786947.7589853932Wooded steep hillsides on clay soil. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1833Joseph L. M. Charboneau2010718199U.S.A.MontanaPhillipsAlong Midale Road/Refuge Road 212, ca 3 air mi SSE of Karsten Coulee Reservoir, ca 31.5 air mi SE of Zortman; ca 51.5 air mi SSW of Malta.-108.011347.6326768780Sagebrush-grasslands on clay soil with steep-sided draws. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2371Joseph L. M. Charboneau2010727208U.S.A.MontanaValleyE of Windy Ridge Road, adjacent to unnamed reservoir, ca 1 air mi NNW of Erie Reservoir, ca 16.5 air mi N of Hinsdale; ca 37 air mi NNW of Glasgow.-107.085248.6373814817Sagebrush-grasslands on clay soil around reservoir. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2837Joseph L. M. Charboneau201083215U.S.A.MontanaValleyTroika Reservoir, S of Willow Creek Road, ca 2 air mi SE of Wagner Spring, ca 36.5 air mi SW of Glasgow.-107.123847.812768783Roadside. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2885Joseph L. M. Charboneau201085217U.S.A.MontanaPhillipsN of Old U.S. Hwy 2 and Bowdoin National Wildlife Refuge, along South Canal, ca 1/4 air mi N of Lake Bowdoin, ca 10.5 air mi ENE of Malta.-107.674548.4309682685Moist ditch bottoms. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2982Joseph L. M. Charboneau201088220U.S.A.MontanaPhillipsW of Rocky Point Road, ca 4 air mi S of Point of Rocks Reservoir, ca 6.5 air mi SSE of Dodson; ca 8 air mi WSW of Malta.-108.211948.3064768771Moist clay soil surrounding reservoir. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3021Joseph L. M. Charboneau201088220U.S.A.MontanaPhillipsShore of Ester Lake, N of Hog Farm Road, ca 3.5 air mi SW of Wild Horse Reservoir, ca 26 air mi SW of Malta.-108.254548.0962807810Moist areas of loamy to clay soil around lake. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3087Joseph L. M. Charboneau201088220U.S.A.MontanaPhillipsMatador Ranch: W of Stage Road (Mont Hwy 204), Little Warm Creek, ca 8 air mi WNW of Veseth Reservoir, ca 10 air mi ENE of Zortman; ca 35 air mi SW of Malta.-108.329247.9823896929Sagebrush-grasslands with swales on clay soil. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3214Joseph L. M. Charboneau2010810222U.S.A.MontanaValleyUnnamed reservoir W of McEachern Road, ca 7 air mi WNW of Lighthouse Hill, ca 26.5 air mi WNW of Opheim.-106.964648.9183801807Moist clay areas surrounding reservoir and in shallow water. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3252Joseph L. M. Charboneau2010812224U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: Carpenter Coulee, S of Harper Ridge Road, ca 9 air mi SSW of Halfpint Reservoir, ca 41.5 air mi SW of Glasgow.-107.167747.7474786844Moist areas of clay soil in draw bottoms. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3328Joseph L. M. Charboneau2010812224U.S.A.MontanaValleyReservoir on Hay Coulee, S of Willow Creek Road, ca 1.5 air mi SW of Bomber Reservoir, ca 21 air mi SSW of Glasgow.-106.822647.9244679682Moist clay mud surrounding reservoir. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3368Joseph L. M. Charboneau2010819231U.S.A.MontanaValleyLake Grabel (dry), S of Hinsdale Road, ca 8 air mi WSW of Lighthouse Hill, ca 32 air mi NNE of Hinsdale; ca 48.5 air mi NNW of Glasgow.-106.981348.8489777783Dry clay soil around reservoir. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3573Joseph L. M. Charboneau2010821233U.S.A.MontanaPhillipsLittle Rocky Mountains: along road between Camp Creek and Beaver Creek, ca 0.5 air mi N of top of Old Scraggy Peak, ca 2 air mi N of Zortman; ca 41.5 air mi SW of Malta.-108.525147.944114571490Roadside. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3721Joseph L. M. Charboneau2010822234U.S.A.MontanaPhillipsReservoir No. 161, S of U.S. Hwy 191 and W of Rudolph Valley Road, ca 2.5 air mi W of Partnership Reservoir, ca 17 air mi SW of Malta.-108.084548.1641777780Raised levee abutting dry canal. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3801Joseph L. M. Charboneau2010825237U.S.A.MontanaValleyJanuary Reservoir and vicinity, N of Little Beaver Road, ca 2 air mi ESE of Wilson Reservoir, ca 10 air mi SW of Glasgow.-106.7648.0799685704Moist reservoir edge and dry streamsides. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3834Joseph L. M. Charboneau2010825237U.S.A.MontanaValleyJim Reservoir, N of Triple Crossing Road, ca 3 air mi WSW of Arrambide Reservoir, ca 23.5 air mi SW of Glasgow.-107.064948.024716743Disturbed clay areas. Phenology: buds.RMRM24589 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.760H. L. Bolley1897820232U.S.A.North DakotaCassFargo.Phenology: flowering.RMRM68576 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.Harry Hapeman19927183U.S.A.NebraskaKearneyMinden.Phenology: vegetative only.RMRM160497 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.Dr. J. Lunell1905817229U.S.A.North DakotaBensonLeeds.Weeds gaining territory very fast. Phenology: flowering.RMRM275447 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.235Elray S. Nixon1964826239U.S.A.NebraskaSheridanMetcalf Public Hunting Grounds: 13 mi N of Hay Springs.1006South-facing disturbed area among open ridges and Pinus ponderosa forest; open bank along stream. Phenology: vegetative only.RMRM44697 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.L. R. Waldron T. F. Manns1901820232U.S.A.North DakotaCassVicinity of Fargo.275Black alluvial loam soil. Phenology: flowering.RMRM39259 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s.n.Dr. J. Lunell1902910253U.S.A.North DakotaWardMinot.In waste places. Phenology: flowering.RMRM604337 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.Neil Hotchkiss194286218U.S.A.North DakotaWardDes Lacs National Wildlife Refuge: west side of upper Des Lacs Lake, 3.5 mi NNW of Kenmare.Former Lake bottom. Phenology: flowering.RMRM153974 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s. n.O. A. Stevens1932824237U.S.A.North DakotaCassFargo.Waste ground. Phenology: fruiting.RMRM153975 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.s. n.O. A. Stevens1932824237U.S.A.North DakotaCassFargo.Waste ground. Phenology: fruiting.RMRM831183 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8634Brian Elliott Elizabeth Mark199979190U.S.A.ColoradoPuebloWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: on Colo Hwy 96 at the junction of Siloam Road, ca 6 air mi E of Wetmore.-104.980838.2541661Roadside and grassland. Phenology: flowering & fruiting.RMRM831296 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8682aBrian Elliott Elizabeth Mark1999710191U.S.A.ColoradoHuerfanoWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: along U.S. Hwy 160, ca 1 mi W of Walsenburg.-104.801837.60931911Roadside. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7946Joseph L. M. Charboneau2011719200U.S.A.MontanaPhillipsAmerican Prairie Reserve: Larb Hills (South): La Plaz Coulee, ca 4.5 air mi N of Fort Peck Lake, ca 4 air mi NE of Schuyler Butte, ca 47 air mi SSE of Glasgow.-107.578847.7196780817Breaks hills and slopes with ponderosa pine woodland and large areas of yellow sweetclover on clay to shalely soil. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8062Joseph L. M. Charboneau2011721202U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: Mickey Butte, ca 4 air mi ENE of Dry Lake, ca 43 air mi ESE of Zortman; ca 54.5 air mi S of Malta.-107.786247.5891807884Big sagebrush-grasslands on clay hills. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8080Joseph L. M. Charboneau2011721202U.S.A.MontanaPhillipsUL Bend National Wildlife Refuge: Dry Lake along Refuge Road 897, ca 6 air mi SSE of Fish Fossil Reservoir, ca 40 air mi SE of Zortman; ca 56 air mi S of Malta.-107.865747.5697719731Big sagebrush-grasslands on stony silty soil. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8109Joseph L. M. Charboneau2011721202U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: Bell Ridge, E of CMR Auto Tour Route (Refuge Road 101), ca 2.5 air mi N of the Missouri River, ca 19 air mi S of Zortman; ca 60 air mi SW of Malta.-108.568347.6433832868Open, dry, south-facing slope with big sagebrush and greasewood on clay to shale. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8337Joseph L. M. Charboneau2011730211U.S.A.MontanaBlaineBlack Coulee National Wildlife Refuge: Black Coulee, ca 10.5 air mi S of Turner, ca 21 air mi NE of Harlem; ca 34.5 air mi NW of Malta.-108.408948.6947887905Roadside. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8497Joseph L. M. Charboneau2011731212U.S.A.MontanaPhillipsHewitt Lake National Wildlife Refuge: W of Hewitt Lake, ca 4 air mi S of the Milk River, ca 8 air mi ESE of Fanny Hill, ca 17 air mi NE of Malta.-107.611648.5365673698Grasslands with silver sagebrush on loamy soil. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8539Joseph L. M. Charboneau201182214U.S.A.MontanaValleyNorth Fork Sutherland Creek, along Murray Road, ca 2.5 air mi SSW of Murray Hill, ca 34 air mi WSW of Fort Peck; ca 36 air mi SW of Glasgow.-107.066447.7787713725Big sagebrush steppe with greasewood on clay hills. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8676Joseph L. M. Charboneau201182214U.S.A.MontanaValleyCorral Reservoir and Timber Creek, S of Triple Crossing Access Road, ca 9.5 air mi WNW of Halfpint Reservoir, ca 41 air mi W of Fort Peck; ca 36 air mi WSW of Glasgow.-107.309947.9436804807Thicket on rip-rap of earth dam with Woods' rose and snowberry. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8709Joseph L. M. Charboneau201182214U.S.A.MontanaValleyBlanche Coulee near its confluence with Larb Creek, ca 4 air mi WNW of Trailerhouse Reservoir, ca 19 air mi SW of Hinsdale; ca 30.5 air mi W of Glasgow.-107.287448.1584713716Grasslands with big sagebrush and greasewood. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8760Joseph L. M. Charboneau201184216U.S.A.MontanaValleyGlasgow Base Ponds, W of Mont Hwy 24, ca 4.5 air mi W of Porcupine Creek, ca 3.5 air mi NW of St. Marie; ca 18 air mi N of Glasgow.-106.579148.4481829835Moist grasslands surrounding pond with willows, Russian olive, and snowberry thickets. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8829Joseph L. M. Charboneau201184216U.S.A.MontanaValleyUpper reaches of Chisholm Creek, ca 4.5 air mi SSW of Pikes Peak, ca 13.5 air mi SW of Opheim; ca 38 air mi N of Glasgow.-106.643748.7287862878Grasslands with scattered silver sagebrush on clay soil. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9219Joseph L. M. Charboneau201189221U.S.A.MontanaPhillipsMilk River Dodson Dam Unit Wildlife Management Area: ca 3.5 air mi NW of Dodson; ca 21 air mi WNW of Malta.-108.308648.4152701707Grasslands with silver sagebrush on sandy soil with small stands of Russian olive, buffaloberry, and cottonwood. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9256Joseph L. M. Charboneau201189221U.S.A.MontanaPhillipsSpring Coulee, S of Nylander Road, ca 6.5 air mi NNE of Dodson, ca 8 air mi N of the Milk River, ca 17 air mi WNW of Malta.-108.19348.4803826829Roadside ditch. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9285Joseph L. M. Charboneau201189221U.S.A.MontanaPhillipsBeaver Creek and DHS Creek near their confluence, ca 3.5 air mi E of Black Cow Reservoir, ca 48 air mi ENE of Zortman; ca 24 air mi SE of Malta.-107.555248.0886692698Steep silty stream banks. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9335Joseph L. M. Charboneau2011811223U.S.A.MontanaPhillipsMcNeil Slough Waterfowl Production Area: Milk River, ca 1 air mi N of Hewitt Lake, ca 13.5 air mi NW of Saco; ca 20 air mi NE of Malta.-107.588948.5557673682Riparian bottoms with closed canopy cottonwood groves to scattered chokecherry, green ash, and boxelder with silver sagebrush. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9392Joseph L. M. Charboneau2011811223U.S.A.MontanaPhillipsBowdoin National Wildlife Refuge: along Refuge Tour Road, near Teal Pond Complex, ca 5 air mi W of Beaver Creek, ca 15 air mi WSW of Saco; ca 11 air mi ENE of Malta.-107.650948.406676679Russian olive thicket. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9479Joseph L. M. Charboneau2011813225U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: Manning Bottoms along Rock Creek, ca 10 air mi E of Fred Robinson Bridge, ca 21.5 air mi S of Zortman; ca 60 air mi SW of Malta.-108.473247.6128695701Floodplain with some groves of willows and cottonwoods on silty soil. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9564Joseph L. M. Charboneau2011813225U.S.A.MontanaPhillipsUnnamed reservoir S of the intersection of Emond and First Creek Hall Roads, ca 10.5 air mi NW of Indian Lake, ca 26 air mi ESE of Zortman; ca 35 air mi S of Malta.-107.984247.8684817823Grasslands with fringed sage and spikemoss on loamy soil. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9588Joseph L. M. Charboneau2011813225U.S.A.MontanaPhillipsAmerican Prairie Reserve: Telegraph Creek, ca 4.5 air mi NE of Indian Lake, ca 38 air mi ESE of Zortman; ca 41.5 air mi S of Malta.-107.769447.7749716719Silty creek bank. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9651Joseph L. M. Charboneau2011815227U.S.A.MontanaValleyBrazil Creek, S of Bentonite Road, ca 2.5 air mi WSW of Mahan and Hoyt Reservoir, ca 9 air mi S of Tampico; ca 8 air mi W of Glasgow.-106.811148.1789652658Creekside riparian areas on clay soil with green ash groves. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.83648B. E. Nelson2011816228U.S.A.ColoradoSummitGore Range: Arapaho National Forest: south base of Green Mountain along County Road 30, above Green Mountain Reservoir, ca 22 air mi NE of Silverthorne at I-70.-106.320139.87982439Steep clayey roadcut. Phenology: fruiting.RMUSFS884507 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.3521BHans Hallman2009730211U.S.A.MontanaCarterCuster National Forest: Ekalaka Hills: in the vicinity of Oliver Springs, ca 0.5 air mi N of Mont Hwy 323 at Conger Hill, ca 5.5 air mi SE of Ekalaka.-104.454545.840711091121Hardwood draw dominated by green ash and grasses. Phenology: flowering & fruiting.RMRM831173 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.65224Ronald L. Hartman1999728209U.S.A.ColoradoHuerfanoWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: 2.5 air mi S of Apache City, I-25 and County Road 110.-104.929437.81331829Roadside along frontage road. Phenology: flowering.RMRM960101 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1673Roger L. Williams201292246U.S.A.WyomingCarbonEncampment.-106.787741.21052225Disturbed open soil. Rare; flowers yellow. Phenology: flowering & fruiting.RMUSFS886317 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.78377B. E. Nelson2009728209U.S.A.MontanaCarterAlong North Butte Creek between Hamilton Creek and Little Missouri River on the south side of Mont Hwy 323, ca 2 air mi NW of Albion; ca 13.5 air mi N of Alzada.-104.309645.20510091012Dry stream bed and adjacent steep banks and bench with green ash and occasional boxelder and snowberry thickets. Phenology: flowering.RMUSFS886317 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.78377B. E. Nelson2009728209U.S.A.MontanaCarterAlong North Butte Creek between Hamilton Creek and Little Missouri River on the south side of Mont Hwy 323, ca 2 air mi NW of Albion; ca 13.5 air mi N of Alzada.-104.309645.20510091012Dry stream bed and adjacent steep banks and bench with green ash and occasional boxelder and snowberry thickets. Phenology: flowering.RMUSFS886318 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.78377B. E. Nelson2009728209U.S.A.MontanaCarterAlong North Butte Creek between Hamilton Creek and Little Missouri River on the south side of Mont Hwy 323, ca 2 air mi NW of Albion; ca 13.5 air mi N of Alzada.-104.309645.20510091012Dry stream bed and adjacent steep banks and bench with green ash and occasional boxelder and snowberry thickets. Phenology: flowering.RMRM649723 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7384Amy J. Roderick1998729210U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Pedro Mountains: Pyramid Mountain, ca 6.3 air mi W of County Road 291; ca 7.3 air mi NW of Leo.-106.851242.35412195Open slope in second year after burn; predominately grasses at edge of ponderosa pine. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.9011Joshua J. Irwin2012822235U.S.A.IdahoLemhiLemhi Valley: city of Salmon, in gravel parking lot on the north side of a building.-113.892645.174371203<25 individuals estimated in xeric coarse textured soil within roadside vegetation, no slope, alluvial geology. Phenology: flowering & fruiting.RMRM831180 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.66598Ronald L. Hartman1999823235U.S.A.ColoradoFremontWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: Spring Gulch.-105.925538.474224392682Streamside and slope. Phenology: fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7103Joshua J. Irwin2011731212U.S.AIdahoLemhiSalmon National Forest: Salmon Wild and Scenic River: Salmon River Road between Ebenezer and Colson creeks, 12.9 air mi WSW of Shoup.-114.5195645.3020394525-75 plants estimated in xeric soil within roadside vegetation, 16 degree slope, SE aspect, gneiss geology. 25-75 plants estimated. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7203Joshua J. Irwin201181213U.S.AIdahoLemhiLemhi Valley: along U.S. Hwy 93 at Big Flat near USGS Point, "Badger 3798", 7.1 air mi N of Salmon.-113.8929645.2786115925-75 plants estimated in xeric coarse textured soil within roadside vegetation, no slope, alluvial geology. 25-75 plants estimated. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.90787Ronald L. Hartman201081213U.S.A.IdahoLemhiSalmon National Forest: Salmon River Mountains: Forest Road 055 along Panther Creek at Clear Creek Trailhead.-114.349245.28991040Disturbed area and adjacent streamside. Phenology: flowering & fruiting.RMRM914626 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.10789Robert D. Dorn2013730211U.S.A.WyomingGoshenNorth Platte River at Torrington.-104.18542.0533331250River bank, with Apocynum and Artemisia. Flowers yellow. Phenology: flowering.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8006Emma E. Freeland201388220U.S.A.MontanaBeaverheadBeaverhead Valley: ca 1 air mi W of Dillon, in Cornell Park.-112.657745.21711557Disturbed ground along a road. Phenology: flowering & fruiting.RMRM653175 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.2714C. H. Refsdal199489221U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: Seedskadee National Wildlife Refuge: ca 27 air mi NW of Green River; 1.3 mi NE of Refuge Headquarters on river access road.-109.862741.91441920Clay streambanks, sometimes river rock, with Carex and Salix. Phenology: flowering & fruiting.RMRM649724 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.7626Amy J. Roderick Kevin J. Taylor199886218U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Ferris Mountains: Miners Canyon on northeastern side of range, ca 16 air mi N of Independence Rock.-107.123842.267419512012Along creek; chokecherry, hawthorn, willow, boxelder, and sagebrush common. Phenology: flowering.RMRM921432 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11466Robert D. Dorn2014728209U.S.A.WyomingPlatteCa 22 mi NW of Wheatland, Cottonwood Creek.-105.24666742.3116671707Roadside, with Grindelia and Bromus. Flower yellow; 1 m high. Phenology: flowering.RMRM921632 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11542Robert D. Dorn2014811223U.S.A.WyomingPlatteWheatland Reservoir No 1, southeast side, ca 5 mi SW of Wheatland.-105.03166741.9951524Shore of reservoir, with Populus and Helianthus. Plant 1 m high. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5116Georgia G. Thomas2014810222U.S.A.IdahoIdahoNez Perce National Forest: Selway-Bitterrroot Wilderness: Bear Creek Pass: ca 11 mi on Forest Trail 516, Santan Creek, ca 25 air mi WNW of Darby, MT.-114.698146.09081032Post burn. Phenology: flowering & fruiting.RMRM Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.5497Georgia G. Thomas2014825237U.S.A.IdahoIdahoClearwater National Forest: Lochsa River Drainage: ca 1 mi on Pete King Road, Forest Road 5515, ca 18.5 air mi E of Kooskia.-115.59146.1531619Abandoned fruit tree grove, mixed conifers, fairly dry open slopes, roadside. Phenology: flowering.RMRM937834 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.11807Robert D. Dorn2016816229U.S.A.South DakotaCusterCa 0.3 mi W of Dewey.-104.04666743.5283331128Roadside, with Bassia, Salsola. Flowers yellow. Phenology: flowering & fruiting.RMRM957530 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.1136Carlos A. Popolizio Donald L. Hazlett199695249U.S.A.WyomingPlatteCamp Guernsey: Broom Creek Canyon, ca 0.7 km SW of confluence with Deadhorse Canyon and 1.8 km E of Spring Creek.1420Gentle to steep slopes; riparian, sandy loam with stones and boulders; with Juniperus scopulorum, Prunus virginiana, Rhus trilobata, Bromus inermis, Melilotus officinalis. Common; erect, taprooted annual; to 1 m tall; ray yellow. Phenology: flowering & fruiting.RMRM961439 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.353Nancy E. Hastings P. Block200774185U.S.A.WyomingPlatteCamp Guernsey: rim of Sawmill Canyon on Osburn Ranch parcel; south end of transect ca 6.0 km NE of North Platte River, ca 7.9 km NW of Range Control.1573Sloping hillside; burned pine open forest; silty loam with rock outcrops; with Pinus ponderosa, Pascopyrum smithii, Packera plattensis, Bouteloua curtipendula, Descurainia pinnata, Elymus spicatus, Tetraneuris acaulis, Carex filifolia, Bromus tectorum, Koeleria macrantha. Scattered; erect, perennial herb; 1 m tall; ray yellow. Phenology: flowering & fruiting.RMRM649725 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8094Amy J. Roderick1998812224U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Seminoe Mountains: Morgan and Marking Pen creeks on County Road 351, ca 2 air mi W of Seminoe Dam.-106.929142.16632103Along creek; cottonwood and aspen common. Phenology: flowering & fruiting.RMRM649726 Lactuca serriolaphysical specimenAsteraceaeLactucaserriolaL.8345Amy J. Roderick1998817229U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Como Lake S of U.S. Hwy 30-287, ca 9 air mi W of Medicine Bow townsite.-106.372141.90762042Greasewood flats; alkaline. Phenology: fruiting.36003,1,0true