: 1.21 $2024-03-29T08:34:10-7:0034.238.242.168searchRMRM649161 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.40241B. E. Nelson1997616167U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: abandoned townsite of Carbon on Carbon Creek ca 2 air mi NE of Simpson Ridge, ca 9.5 air mi SW of Medicine Bow; ca 10 air mi SE of Hanna.-106.372141.849420882097Roadside. Phenology: flowering.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1523Peter J. Ebertowski2002711192U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: intersection of County roads 32 and 33, ca 24 air mi NNW of Douglas; ca 21 air mi NE of Glenrock.-105.58343.077516731679Roadside in sagebrush/grassland. Phenology: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1600Peter J. Ebertowski2002711192U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Cheyenne River Draw on County Road 31, ca 27 air mi NNE of Glenrock; ca 36 air mi NNW of Douglas.-105.688243.22115671579Side of road above creek. Phenology: fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1853Peter 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 & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1883Peter J. Ebertowski2002717198U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: spring and head of Holmes Creek on Payne or Forest Road 934, ca 18 air mi SE of Wright; ca 26 air mi N of Bill.-105.229543.600914631496Creek bed. Phenology: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2001Peter J. Ebertowski2002720201U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: tributary of Dry Creek on Dull Center or County Road 38, ca 3 mi E of Bill; ca 35 air mi NNE of Douglas.-105.190543.24081426Creek bed. Phenology: fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2258Peter 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: fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3374Peter 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 & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3455Peter J. Ebertowski2002825237U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: Cheyenne River at Charlies Draw on Dutch Joe or County Road 85, ca 9 air mi W of Mule Creek Junction; ca 33 air mi SSW of Newcastle.-104.399343.38411146Floodplain terrace, widely spaced cottonwoods. Phenology: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.5453Peter J. Ebertowski2003627178U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: North Fork Bear Creek and evirons, on Jenne Trail or County Road 34, ca 19 air mi WNW of Bill; ca 33 air mi SSW of Wright.-105.648643.292315391548Edge of playa. Phenology: flowering.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.63482B. E. Nelson2004924268U.S.A.ArizonaCoconinoCoconino National Forest: near the dam on Upper Lake Mary, S of Anderson Mesa, ca 10.5 air mi SE of Flagstaff.-111.534235.08320732085Weedy open valley below the dam. Phenology: flowering.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.63522B. 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.-111.438134.963121642225Old weedy lake bed. Phenology: fruiting.RMRM599312 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.38101Ronald L. Hartman1993623174U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Emigrant Gap Ridge, ca 12 air mi W of Casper.-106.557842.853316911701Sandy and shaly areas with ponderosa pine on ridges. Phenology: buds.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.69798B. 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.-111.828435.24262173Cinder roadbank and pavement edge. Phenology: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.69811B. E. Nelson James F. Fowler2006824236U.S.A.ArizonaCoconinoKaibab National Forest: W of McDermit Canyon along old U. S. Hwy 66, ca 1.5 air mi E of Parks; ca 15 air mi E of Williams.-111.918135.26162195In and around corrals. Phenology: fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.69859B. 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: fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.70229B. 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: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.4784Jeanette Flaig2004624176U.S.A.ColoradoConejosEastern San Juan Mountains: Rio Grande National Forest: Fox Creek Road, just S of Hicks Canyon, 17 air mi SW of Centro.-106.228637.07422629Roadside. Phenology: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.79573Ronald L. Hartman2004713195U.S.A.ColoradoConejosEastern San Juan Mountains: Rio Grande National Forest: 1-1.2 air mi ENE of spillway on Terrace Reservoir; ridge from Forest Service road to top of first main rock outcrop on ridge leading to Chiquito Peak.-106.269537.369126322887Rocky slopes and outcrops and roadside; roadside. Phenology: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.84246Ronald L. Hartman James F. Fowler2006914257U.S.A.ArizonaCoconinoCoconino National Forest: Anderson Mesa: Forest Road 125, ca 1 air mi E of County Road 3 (Forest Hwy 3).-111.414534.920421792195Open meadow and scattered ponderosa pine on margin. Phenology: fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.84305Ronald 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: fruiting.RM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3730Laura Welp1994820232U.S.A.WyomingCarbonGreat Divide Basin Area: Ferris Mountains: foothills ca 7 air mi NW of Ferris; ca 9 air mi ENE of Lamont.-107.293342.253323012400Low draw between sagebrush hills and flats; grazed graminoids and sagebrush dominant. Phenology: flowering.RM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.45916Ronald L. Hartman1994620171U.S.A.WyomingCarbon[location and coordinates withheld]20732118Sagebrush slopes, area beneath snow fence, and shale and sandstone outcrops.RM650329 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.6853Laura Welp1995725206U.S.A.WyomingCarbon[location and coordinates withheld]1998Shallow lake with dense grasses; clay soil with sand. Phenology: flowering & fruiting.RMRM650330 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.6948Laura Welp1995729210U.S.A.WyomingSweetwater[location and coordinates withheld]20732103Dry east facing slope of rim with sagebrush and grasses; fine soil. Phenology: flowering.RMRM960929 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.63400Ronald L. Hartman1998816228U.S.A.New MexicoColfaxNM Hwy 72, 4 road mi E of I-25 (milepost 4).-104.3736.91932042Grassy roadside. Phenology: flowering.RMRM960930 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.63448Ronald L. Hartman1998816228U.S.A.New MexicoColfaxNM Hwy 72, 11 road mi E of I-25 (milepost 11).-104.278336.92192500Roadside through wooded area. Phenology: fruiting.RMRM960928 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.63513Ronald L. Hartman1998816228U.S.A.New MexicoColfaxNM Hwy 72, 26 road mi E of I-25 (milepost 26).-104.009836.87122103Oak and ponderosa pine woodland and roadside. Phenology: flowering & fruiting.RMRM337367 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.28Andrew Warren1981610161U.S.A.WyomingSweetwaterCa 6.5 air mi S of Wamsutter.-107.956841.58312088Growing in clay loam of sagebrush draw with Agropyron smithii, Chenopodium album, and Plagiobothrys scourleri. Phenology: flowering & fruiting.RMRM4008 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.550Aven Nelson1894715196U.S.A.WyomingPlatteHartville.-104.727342.327114321463Phenology: flowering & fruiting.RMRM29343 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.7610Aven Nelson1900716197U.S.A.WyomingAlbanyDunn's Ranch.-105.740141.64732134Phenology: flowering.RMRM461 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.s.n.B. C. Buffum18917182U.S.A.WyomingAlbanyUniversity Campus.-105.584441.31332195Phenology: flowering & fruiting.RMRM532552 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.595Herb L. Karcher1988612164U.S.A.WyomingCampbellWright.-105.470143.75571524In damp draws throughout the area. Abundant. Phenology: flowering.RMRM302772 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2463J. Francis Macbride1913618169U.S.A.WyomingAlbanyLaramie.-105.584441.31332195A weed of disturbed grounds. Phenology: flowering & fruiting.RMRM544419 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.582Jan Pollet1989826238U.S.A.WyomingPlatteAlong west bank of Glendo Reservoir, 3 road mi E of Glendo.-105.020342.45661437Bank of reservoir, below dam. Phenology: flowering & fruiting.RMRM543876 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.587Jan Pollet1989826238U.S.A.WyomingPlatteAlong west bank of Glendo Reservoir, 3 road mi E of Glendo.-104.960542.47161437Bank of reservoir, below dam. Phenology: flowering.RMRM544425 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.706Jan Pollet198991244U.S.A.WyomingPlatteGuernsey Reservoir, east shore, 6 road mi NW of Guernsey.-104.784242.32711323Phenology: fruiting.RMRM566312 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.5740Neil Snow1989828240U.S.A.WyomingAlbanyCounty Road 37; ca 1.5 mi S of Wyo Hwy 230.-105.755341.19662195Roadside with Helenium, Agropyron, Ambrosia, and Alopecurus. Phenology: flowering & fruiting.RMRM293361 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.19R. E. Ries D. W. Sabinske1973817229U.S.A.WyomingCampbellBlack Thunder Strip Mining Area: North Prong of Thunder and Little Thunder creeks.-105.250743.67071411Stream bottom wet; soils loamy, bare, clayey in Absted and Bone series; with prairie cordgrass, blue grama, saltgrass, and western wheatgrass. Phenology: flowering & fruiting.RMRM391448 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1180Robert J. Hill1973723204U.S.A.WyomingAlbanyGreat Divide Basin and Adjacent Regions: Sand Creek, near Camel Rock, Castle Rock, and Weird Wind Erosions near Colorado.-105.755341.02432317Phenology: flowering & fruiting.RMRM290590 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.71-18R. Owen Asplund197184216U.S.A.WyomingAlbanyStanton School in Laramie.-105.584441.31332195Schoolyard. Phenology: flowering.RMRM280875 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.252Robert L. Tresler1965720201U.S.A.WyomingLaramie10 mi SW of Pine Bluffs.-104.1741.09611585Weed in wheat field. Phenology: flowering & fruiting.RMRM300860 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.95Robert Luce197869160U.S.A.WyomingGoshenS of Springer Reservoir.-104.30941.85271280Grassland. Phenology: flowering.RMRM580175 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.12422Walter Fertig Jane Struttmann199197250U.S.A.WyomingAlbanyLaramie Basin: adjacent to Sand Creek Road; ca 1/4 air mi NE of Chimney Rock; ca 2 air mi N of Colorado.-105.755341.02432195Sagebrush/mountain mahogany grassland on red, clay soil. Phenology: fruiting.RMRM579690 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.13323Walter Fertig Jane Struttmann1992813226U.S.A.WyomingNatronaPathfinder National Wildlife Refuge: northeast shore of Pathfinder Reservoir on banks of channel between upper and lower parts of the reservoir; ca 4.5 mi S of Wyo Hwy 220.-106.904742.496617861798Open canopy, rocky outcrops on shore and adjacent rocky-sandy beaches. Phenology: flowering & fruiting.RMRM602376 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.14610Walter Fertig Jane Struttmann1991921264U.S.A.WyomingPlatteFoothills of Laramie Range: northwest shore Wheatland Reservoir #1; ca 6 air mi SW of Wheatland.-105.0488941.99641500Coarse, sandy-gravel beach in floodplain of reservoir. Phenology: fruiting.RMRM645374 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.18451Walter Fertig1998727208U.S.A.WyomingLaramieSoutheast Plains: banks of Spring Creek, 2 mi S of Federal and 3 mi E of Mesa Mountain; ca 5 air mi N of Wyo Hwy 201 (Happy Jack Road).-105.123741.24442012Steep slopes of white silty-ashy ridge overlooking stream channel in community of scattered Gutierrezia sarothrae, Kraschenninikovia lanata, Elymus smithii, and Melilotus officinalis. Phenology: flowering & fruiting.RMRM682432 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.19278Walter Fertig Laura Welp2000831244U.S.A.WyomingLaramieSoutheast Plains: F. E. Warren Air Force Base: west bank of Crow Creek downstream of FamCamp, along gravel road S of pavilion, Cheyenne.-104.868141.15111875Gravelly roadside on flat banks above creek; site dominated by Poa pratensis, Eragrostis, Grindelia squarrosa, and Verbena hastata; vegetative cover ca 85%. Phenology: flowering.RMRM703256 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.19686Walter Fertig200179190U.S.A.WyomingAlbanyLaramie Basin: south end of Laramie on corner of 4th Street and Fetterman Street.-105.584241.29672195Roadside weed patch with Tragopogon dubius and Distichlis stricta. Soil clay-rich. Phenology: vegetative only.RMRM364978 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.93William C. Edwards198371182U.S.A.WyomingLaramieCampus of Laramie County Community College SE of Cheyenne.-104.783141.10641859Shortgrass prairie. Phenology: flowering.RMRM940347 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3883Jill E. Larson200588220U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Valle de los Romeros W through Policarpio Canyon to Forest Road 76, Forest Trail 13, ca 4 air mi E of Tres Ritos.-105.441236.134526522957Roadside. Phenology: flowering & fruiting.RMRM99758 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.730Herbert C. Hanson1923726207U.S.A.ArizonaCoconinoFlagstaff.-111.651235.197492103Sandy soil. Phenology: flowering.RMRM649155 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2100Amy J. Roderick1997712193U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Pathfinder Reservoir: Tye Draw leading into reservoir, ca 8 air mi N of Seminoe Dam; ca 38 air mi NE of Sinclair.-106.890242.26741786Sandy embankment of draw leading into reservoir. Phenology: flowering & fruiting.RMRM949625 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.69438B. 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 & fruiting.RMRM949624 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.69484B. 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 & fruiting.RMRM949626 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.10202Jill E. Larson2006811223U.S.A.New MexicoColfaxCarson National Forest and Vicinity: Eagle Nest Lake State Park: Moreno Day Use Area, on south side of U.S. Hwy 64, ca 3/4 air mi SSE fo Eagle Nest.-105.250136.54452498Along north shore of reservoir with Hordeum jubatum, Verbascum thapsis, and Cirsium arvense. Phenology: flowering & fruiting.RMRM949627 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.8615Jill E. Larson2006717198U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Forest Road 133 above cattle guard, ca 2 1/4 air mi S of Rio San Antonio, ca 15 air mi NW of Tres Piedras.-106.122736.818427432804Stream drainage (currently dry) with occasional Populus, Hordeum jubatum, and Phleum pratense. Phenology: flowering & fruiting.RMRM642210 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.s.n.Stuart Markow2001622173U.S.A.WyomingTetonGrand Teton National Park: Jackson Hole: west side of Moose Post Office, ca 0.5 air mi W of Moose Junction.-110.715943.66281966Highly disturbed grass/forb community with Poa pratensis, Eriogonum umbellatum. Phenology: flowering.RMRM642211 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.s.n.Stuart Markow2001728209U.S.A.WyomingTetonGrand Teton National Park: Jackson Hole: west side of Moose-Wilson Road, ca 100 yds N of pay station, ca 1 air mi NE of Teton Village.-110.795643.60521951Roadside with Bromus inermis, Poa pratensis, Cynoglossum officinale. Phenology: flowering.RMRM649156 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2549Amy J. Roderick1997720201U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: First Sand Creek and ridge to west, ca 7.2 air mi N of Elk Mountain townsite; ca 15.2 air mi SE of Hanna.-106.410941.79122164Dry to muddy creek bed and embankments. Phenology: flowering.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1339Rachel Newton2005628179U.S.A.WyomingAlbanyWetlands and Adjacent Areas: Wheatland Reservoir #2, ca 36 air mi NNW of Laramie, ca 16 air mi NE of Rock River.-105.719141.86132070Dry sandy uplands. Phenology: flowering & fruiting.RMRM649157 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2594Amy J. Roderick1997720201U.S.A.WyomingCarbon[location and coordinates withheld]2103Moist grassy creek bed. Phenology: flowering.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2043Rachel Newton2005715196U.S.A.WyomingPlatteWetlands and Adjacent Areas: Cottonwood Creek Bay, Glendo Reservoir, ca 5 air mi NE of Glendo, 26 air mi SE of Douglas.-104.93742.53021419Exposed mud flats. Phenology: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3772Rachel Newton200593246U.S.A.WyomingPlatteWetlands and Adjacent Areas: Glendo Reservoir, ca 4 air mi N of Glendo.-105.03342.55941402Dry uplands. Phenology: fruiting.RMRM210601 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.s.n.K. Sime1938823235U.S.A.MontanaYellowstoneBillings.-108.500745.7883Phenology: flowering & fruiting.RMRM765618 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3844Sarah Nunn2001731212U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: Moody Hill Road (Forest Road 513), off Pennock Pass Road (County Road 44H), ca 12 air mi W of Fort Collins.-105.346440.56921342317Steep, dry, north facing slopes with Douglas fir, ponderosa pine, and Cercocarpus. Phenology: flowering.RMRM806186 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2360Brian Reif2002714195U.S.A.New MexicoSandovalSanta Fe National Forest and Vicinity: Jemez Mountains: NM Hwy 126 in Telephone Canyon, 12.5 air mi ESE of Cuba. SW for 0.6 air mi on NM Hwy 126 to seep, NE 1.3 air mi to Moon Spring; also returning to NM Hwy 126 via Forest Road 117.-106.764235.94161724782621Roadside through canyon bottom meadow. Phenology: flowering.RMRM806185 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3866Brian Reif2002813225U.S.A.New MexicoSan MiguelSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Forest Road 263 along Gallinas Creek, 16 air mi NW of Las Vegas. From Fishing Hole Picnic Area 0.3 mi in both directions along creek.-105.45051735.708252362Canyon bottom roadside, riparian, and bluffs of volcanic rock in mixed conifer forest. Phenology: flowering.RMRM806183 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.76210Ronald L. Hartman2002721202U.S.A.New MexicoSandovalSanta Fe National Forest and Vicinity: Jemez Mountains: NM Hwy 126, 1.2 road mi from Forest Road 20, Telephone Canyon.-106.74166735.95524392469Grassy valley. Phenology: flowering.RMRM649158 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2857Amy J. Roderick1997729210U.S.A.WyomingCarbon[location and coordinates withheld]2128Dry creek bed. Phenology: flowering.RMRM806184 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.9250Brian 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: flowering.RMRM804935 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.61744B. E. Nelson2004712194U.S.A.New MexicoSan MiguelSanta Fe National Forest and Vicinity: Glorieta Mesa: Lopez Tank on Canyon del Aqua del Corral and vicinity on Forest Road 324, ca 10 air mi S of South San Ysidro; ca 19 air mi SSE of Pecos.-105.551835.320521952207On reservoir dam. Phenology: flowering.RMRM649159 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3303Amy J. Roderick199786218U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Fort Steele State Recreation Area, ca 6.6 air mi NW of Walcott Junction; ca 8.4 air mi E of Sinclair.-106.954141.77661981Sandy sagebrush draw. Phenology: flowering & fruiting.RMRM649160 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3451Amy J. Roderick1997810222U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Dugway Recreation site along North Platte River, ca 6 air mi NE of Sinclair; ca 9.4 air mi NE of Rawlins.-107.051141.86391951Willow thickets, shallow ponds, and gravelly patches in wet, disturbed area. Phenology: flowering.RMUSFS469724 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.424A. J. Connell19167183U.S.A.New MexicoSan MiguelSanta Fe National Forest: Camp Overton Price pasture.-105.664135.82832530Level meadow, plowed fields. Phenology: flowering & fruiting.RMRM653378 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.463C. S. Crandall18927183U.S.A.ColoradoLarimerFort Collins.Phenology: flowering & fruiting.RMRM736796 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.DS-12419D. Seigler J. Kramer1985925268U.S.A.ColoradoEl PasoCalhan: Paint Mine Road.Phenology: vegetative only.RMRM63520 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.622Earl L. Johnston1909U.S.A.ColoradoWeldEvans.Phenology: vegetative only.RMUSFS469730 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.26699Frederick J. Hermann1975810222U.S.A.ColoradoLarimerFort Collins: West Elizabeth Street at Shields.1524In crevices of concrete walk. Phenology: flowering.RMRM43045 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.4872Frank Tweedy19027182U.S.A.ColoradoBoulderNear Boulder.15241829Phenology: vegetative only.RMRM155486 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2375George E. Osterhout1901628179U.S.A.ColoradoWeldNew Windsor.Phenology: flowering & fruiting.RMRM31145 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2375George E. Osterhout1901628179U.S.A.ColoradoWeldNew Windsor.Phenology: flowering.RM651283 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.42272B. E. Nelson1997727208U.S.A.WyomingAlbanyLaramie Range: along Davidson Creek, ca 5 air mi NW of Marshall and ca 4 air mi SE of Little Medicine; ca 74.5 air mi NNW of Laramie.-105.936242.339722742317Dry stream channel and banks. Phenology: flowering & fruiting.RMRM155487 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.4391George E. Osterhout191093246U.S.A.ColoradoLarimerThe Rustic.Phenology: flowering & fruiting.RMRM155482 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.95George E. Osterhout1896627179U.S.A.ColoradoWeldNew Windsor: Colorado River.Phenology: flowering & fruiting.RMRM312274 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.s.n.George E. Osterhout1892628180U.S.A.ColoradoWeldWindsor.Phenology: flowering.RMRM47336 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3262J. H. Cowen189678190U.S.A.ColoradoLarimerFort Collins: college grounds.Phenology: flowering.RMRM523507 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.4959Janet Wingate1987720201U.S.A.ColoradoLarimerRocky Mountain National Park: Front Range: Moraine Park: Big Thompson River: E section near E parking lot.2439Disturbed area along abandoned road. Phenology: flowering.RMRM469725 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.165Louis P. Rudolph191494247U.S.A.New MexicoSan MiguelSanta Fe (Pecos) National Forest: Panchuela Ranger Station.-105.664135.828292621Black loam. Phenology: fruiting.RMRM392335 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.F-521O. A. Beath19396152U.S.A.New MexicoColfaxSpringer: Clayton's Ranch.-104.644536.38211783Phenology: flowering.RMRM155481 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.4859Paul C. Standley1908810223U.S.A.New MexicoSan MiguelPecos River National Forest: Wiusaris Ranch.2560Phenology: flowering.RMUSFS469726 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1648Ralph K. Gierisch1951829241U.S.A.ColoradoGilpinRoosevelt National Forest: Rollinsville Ranger Station.1325605% southeast slope, deep loam, roadside, disturbed soils. Phenology: fruiting.RMRM718265 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.10900Robert Merril King Robert M. Garvey1999616167U.S.A.ColoradoWeldCounty Road 257, ca 2.5 mi S of Windsor, near Cache la Poudre River.-104.89138940.4566671408In clearing. Phenology: flowering.RMRM172035 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.99Robert M. Muir1937711192U.S.A.ColoradoWeldDry Lake Flats.1524Dry lake flats, sandy loam. Phenology: flowering.RMRM296774 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2266Ronald L. Hartman196874186U.S.A.New MexicoColfaxPhilmont Scout Ranch, near Cimarron: gravel road, 2 mi NW of Ponil Camp.-105.0669936.63752225Roadside. Phenology: flowering & fruiting.RMRM296773 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2597Ronald L. Hartman196885218U.S.A.New MexicoColfaxPhilmont Scout Ranch, near Cimarron: road 1.5 mi NW of Ponil.-105.061436.6312225Along road in waste places. Phenology: flowering & fruiting.RMRM295502 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3130Ronald L. Hartman197171182U.S.A.ColoradoLarimer1 mi N of Dale Creek on Hwy 287.Roadside. Phenology: flowering.RMRM64582 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.5747W. W. Robbins1908710192U.S.A.ColoradoJeffersonSemper Lake.Phenology: flowering.RMRM64583 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.5784W. W. Robbins1908712194U.S.A.ColoradoJeffersonSemper Lake.Phenology: flowering.RMRM736309 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.19183William A. Weber1996825238U.S.A.ColoradoGilpinPeak to Peak Highway at Rollinsville: along dirt road paralleling raliroad right of way.Roadside. Phenology: flowering & fruiting.RMRM317791 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1455B. E. Nelson1976815228U.S.A.WyomingAlbanyLaramie Plains: ca 6.5 air mi SW of Laramie, at Five Mile Creek crossing on Sand Creek or County Road 34.-105.642841.22722210Common in moist clay on roadside with Glycyrrhiza. Phenology: flowering & fruiting.RMRM324266 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1978B. E. Nelson1978918261U.S.A.WyomingCampbellPowder River Basin: ca 39 air mi SSW of Gillette, ca 9 air mi E of Middle Pumpkin Buttes along Four Mile and South Branch Four Mile Creeks.-105.710543.75691509Frequent in sandy clay in bottom with Malva rotundifolia and Chenopodium berlandieri. Phenology: fruiting.RMRM324264 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2020B. E. Nelson1978918261U.S.A.WyomingCampbellPowder River Basin: ca 12.5 air mi SSW of Gillette on Bell Road at Caballo Creek.-105.598144.12191432Frequent in loamy clay on roadside with Amaranthus and Helianthus. Phenology: vegetative only.RMRM324261 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2294B. E. Nelson1978922265U.S.A.WyomingConversePowder River Basin: ca 7.5 air mi NW of Bill, ca 39 air mi N of Douglas on Wyo Hwy 59 along Dry Fork of the Cheyenne River.-105.345843.31171402Frequent in sandy soil in river bottom with Chenopodium. Phenology: flowering & fruiting.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.2489B. E. Nelson1978928271U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole: Springer Reservoir (Goshen Hole Reservoir) ca 1.5 air mi S of Yoder, ca 13.5 air mi SSW of Torrington.-104.292441.88941310In sandy clay in grassy areas near reservoir with Melilotus and Hordeum. Frequent. Phenology: fruiting.RMRM324263 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3236Keith H. Dueholm1978629180U.S.A.WyomingCampbell[location and coordinates withheld]1524Heavily grazed plains and butte, eroded slopes, small holding pond; shallow drainage. Phenology: flowering.RMRM324262 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3274Keith H. Dueholm Mary Alice Sanguinetti197875186U.S.A.WyomingConverse[location and coordinates withheld]1432Flats and stream outlet; roadside. Phenology: flowering & fruiting.RMRM324265 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.3449Keith H. Dueholm Mary Alice Sanguinetti197877188U.S.A.WyomingCampbellPowder River Basin: west part of Gillette, ditch along U.S. 14-16.-105.5197244.29751402Ditch. Phenology: flowering & fruiting.RMRM324267 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.4161Keith H. Dueholm Mary Alice Sanguinetti1978713194U.S.A.WyomingCampbell[location and coordinates withheld]1463Drying mud in ditch. Phenology: flowering & fruiting.RMRM333336 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.9938Ronald L. Hartman1979711192U.S.A.WyomingCarbonHanna Basin: Seminoe Reservoir, ca 10 air mi SSE of Seminoe Dam.-106.838342.04941939Sandy beach mostly in shade of Tamarix but occasionally in open. Associates include Potentilla, Astragalus, Physaria, Halogeton, Verbena, Iva, Potentilla anserina, and Lupinus. Phenology: flowering.RMRM599319 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.27660B. E. Nelson1993728209U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Beck, North Natrona, or County Road 126, ca 2.7-3.3 air mi N of Natrona; ca 29 air mi NW of Casper.-106.801143.073917191728Banks and above stock pond. Phenology: fruiting.RMRM599318 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.27823B. E. Nelson1993730211U.S.A.WyomingConverse[location and coordinates withheld]15601567Roadside and adjacent area. Phenology: flowering & fruiting.RMRM599317 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.28704B. E. Nelson1993818230U.S.A.WyomingPlatte[location and coordinates withheld]1609End of wheat and fallow strips and adjacent roadside. Phenology: fruiting.RMRM599316 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.29249B. E. Nelson1993826238U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along the North Platte River ca 0.5-0.8 mi above the mouth of Wagon Hound Creek, ca 6.8 air mi S of Douglas.-105.372542.65691445Open flats above the river. Phenology: fruiting.RMRM599315 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.29846B. E. Nelson1993927270U.S.A.WyomingGoshen[location and coordinates withheld]1259In a two track through the floodplain. Phenology: vegetative only.RMRM599314 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.30010B. 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.-105.076142.599414081432Mud flats along the river and old reservoir bottom. Phenology: fruiting.RMRM654677 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.31442B. E. Nelson1994615166U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: between County Road 215 and Union Pacific Railroad tracks, ca 2.3 air mi W of Hillsdale; ca 15.3 air mi NE of Cheyenne.-104.526141.21581737Sandy grassland flat. Phenology: flowering & fruiting.RMRM654678 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.33369B. 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.-104.949241.691116891701Hay meadows and valley bottom with scattered patches of boxelder. Phenology: flowering & fruiting.RMRM654679 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.34089B. E. Nelson1994818230U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Rocky Hollow between Bear and Horse creeks, ca 1/2-3/4 air mi N of Laramie County, ca 15 air mi WSW of La Grange; ca 36 air mi SSW of Torrington.-104.435541.575415791591Roadside and adjacent right-of-way. Phenology: flowering.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.34232B. 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.RMRM654680 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.34232B. 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.RMRM599312 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.38101Ronald L. Hartman1993623174U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Emigrant Gap Ridge, ca 12 air mi W of Casper.-106.557842.853316911701Sandy and shaly areas with ponderosa pine on ridges. Phenology: buds.RMRM599311 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.41048Ronald L. Hartman1993713194U.S.A.WyomingLaramie[location and coordinates withheld]1996Disturbed areas along railroad. Phenology: flowering & fruiting.RMRM599313 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.41107Ronald L. Hartman1993713194U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: north end of Cheyenne at Wyo Hwy 211 and I-25 interchange.-104.836941.22531920Plains and roadside. Phenology: flowering & fruiting.RMRM599310 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.41148Ronald L. Hartman1993713194U.S.A.WyomingLaramie[location and coordinates withheld]2103Sandy slopes. Phenology: flowering & fruiting.RMRM599309 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.41237Ronald L. Hartman1993713194U.S.A.WyomingLaramie[location and coordinates withheld]2042Sandy road cut. Phenology: flowering & fruiting.RMRM654681 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.181Timothy W. Chumley1994818230U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along North Crow Creek off County Road 109, ca 1 1/2 air mi N from junction with Wyo Hwy 210 or Happy Jack Road, ca 16.4 air NW of Cheyenne.-105.086841.19661987Drier flats and slopes above the creek. Phenology: fruiting.RMRM654682 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.217Timothy W. Chumley1994818230U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along the bed of Crow Creek from County Road 203 ca 1.5 mi downstream, ca 1 air mi SW of Carpenter; ca 23.6 air mi ESE of Cheyenne.-104.377441.033516431646Dry sandy-gravelly creek bed and dry slopes and flats above the creek bed. Phenology: fruiting.RMRM649614 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.6061Amy J. Roderick199877188U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Bates Creek Reservoir, ca 3 air mi E of County Road 402; ca 13.3 air mi N of Shirley Basin townsite.-106.216642.4822225Wet meadows and edges of reservoir dominated by graminoids; Potentilla anserina common; disturbed. Phenology: flowering.RMRM840259 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.5823Ben Legler2007712193U.S.A.New MexicoColfaxVermejo Park Ranch: along the Canadian River at mouth of Dargol Canyon; 14 air mi W of Raton.-104.682472236.927861112221Rocky riverbanks and adjacent dry gravel bars, with scattered small Pinus ponderosa saplings, Senecio, Verbascum thapsus, Ratibida columnifera, grasses. Flowers yellowish; frequent in dry sandy soil on gravel bar. Photographed. Phenology: flowering.RMRM840258 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.7119Ben 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. Scattered among grasses. Phenology: fruiting.RMRM828357 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.5721Brian Elliott1998819231U.S.A.ColoradoHuerfano[location and coordinates withheld]1875Prairie. Phenology: flowering & fruiting.RMRM840689 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.11528Ben Legler2009723204U.S.A.New MexicoColfaxVermejo Park Ranch: along Schoolhouse Road near schoolhouse on south side of Vermejo Park; 0.3 air mi SW of Casa Grande.-104.98215736.8844922267Weedy fields and roadsides, with Equisetum laevigatum, Kochia scoparia, Ambrosia tomentosa, and Bromus spp.. Rhizomatous perennials; common along roadside. Specimen GPS: 36.884492, -104.982157. Phenology: flowering & fruiting.RMRM915975 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.4742Laura E. Lukas2007817229U.S.A.WyomingAlbanyMedicine Bow Mountains: Jelm Mountain, ca 1 mi E of New Jelm, ca 2 air mi SE of Woods Landing.-105.997541.06422410Dry sagebrush steppe. Phenology: fruiting.RMRM915976 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.10461Laura E. Lukas2009720201U.S.A.WyomingCarbonMedicine Bow Mountains: just S of I-80, Wagonhound Road and Bear Creek, ca 3.5 air mi NW of exit 267 (Wagonhound) and ca 4 air mi SE of Elk Mountain (town).-106.347141.65452288Stream banks in sagebrush hills. Phenology: flowering.RMRM824216 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.7043Michael Schiebout200571182U.S.A.New MexicoSan MiguelLas Vegas Wildlife Refuge: 4.5 air mi SW of Las Vegas.-105.15888935.5577782002Steppe around lake and in ditches. Phenology: fruiting.RMRM824126 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.8932Michael Schiebout2005811223U.S.A.New MexicoSan MiguelLas Vegas Wildlife Refuge: 4 1/2 air mi SE of Las Vegas.-105.16583335.5505562008Prairie and along drainage ditch. Phenology: fruiting.RMRM823651 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.1807Michael Schiebout2004726208U.S.A.New MexicoColfax11 mi W of Folsom on NM Hwy 72.-104.07305636.9072222309Ditch. Phenology: flowering & fruiting.RMRM828358 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.61844Ronald L. Hartman1998630181U.S.A.ColoradoHuerfanoWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: U.S. Hwy 160, ca 5.5 air mi NW of La Veta.-105.093637.55112347Roadside. Phenology: flowering & fruiting.RMRM2647 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.180P. A. Rydberg1891814226U.S.A.NebraskaKimballValley, 6 mi S of Dix.Phenology: vegetative only.RMRM829892 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.8370Brian Elliott Elizabeth Mark199976187U.S.A.ColoradoHuerfano[location and coordinates withheld]1829Aquatic and pondside. Phenology: flowering & fruiting.RMRM829854 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.8445Brian Elliott Elizabeth Mark199977188U.S.A.ColoradoHuerfano[location and coordinates withheld]2591Grassland with numerous forbs. Phenology: flowering.RMRM649615 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.7266Amy J. Roderick1998727208U.S.A.WyomingAlbanyUpper North Platte and Laramie River Drainages: Laramie Plains: Wheatland Reservoir No. 3 along Garrett Road, ca 16.4 air mi NE of Rock River.-105.731941.8932103Sagebrush, rabbitbrush, and mixed grasses around reservoir. Phenology: flowering.RMRM Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.9628Lori E. Brummer201279191U.S.A.ColoradoOurayUncompahgre Plateau: Howard Flats, along County Road 28 or San Miguel County Road 62X, ca 9.5 air mi WSW of Rigdway.-107.947338.130526292705Along roadside in sagebrush. Phenology: flowering.RMRM914458 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.10800Robert D. Dorn2013731212U.S.A.WyomingGoshenCa 17 mi N of Fort Laramie.-104.52666742.4533331493Roadside, with Helianthus. Phenology: buds.RMRM914430 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.10971Robert D. Dorn2013917260U.S.A.WyomingGoshenSpringer Reservoir ca 2 mi S of Yoder.-104.28666741.8933331310Shore of reservoir, with Chenopodium and Eragrostis. Phenology: vegetative only.RMRM649616 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.7616Amy J. Roderick199882214U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Hanna Basin: Medicine Bow River at County Road 291, ca 10.1 air mi N of Hanna.-106.507942.00941951Sagebrush-greasewood in disturbed area. Phenology: flowering.RMRM921373 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.11355Robert D. Dorn201471182U.S.A.WyomingCrookAlong Belle Fourche Road at Moorcroft.-104.97544.2751280Wet meadow, with Bromus and Rumex. Phenology: buds.RMRM921827 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.11694Robert D. Dorn2014102275U.S.A.WyomingPlatteCa 5.5 mi SW of Wheatland, south side of Wheatland Reservoir No. 1 dam.-105.03166742.0051524Rocky area, with Physalis and Phyla. Phenology: fruiting.RMRM649617 Ambrosia tomentosaphysical specimenAsteraceaeAmbrosiatomentosaNutt.7885Amy J. Roderick199888220U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Pathfinder Reservoir and Mountain: Bishop Point Recreation Area, ca 3.4 air mi W of County Road 409; ca 10.5 air mi SW of Alcova townsite.-106.904742.49661792Sandy shoreline and adjacent granite outcrops; sagebrush and rabbitbrush common. Phenology: flowering & fruiting.36003,1,0true