Elymus canadensis var. canadensis (1997)
POACEAE
Elymus canadensis L. var. canadensis
U.S.A., Wyoming, Park County: Northern Absaroka Area: road S of the North Fork Shoshone River, ca 0.5 air mi E of Wapiti.
Elev. 5600 ft.
Roadside and slope to river. Phenology: flowering.
Annotations:
1. Elymus canadensis L. var. canadensis
Annotated by David Rosenthal.
Accession: USFS 855680, Barcode: USFS0039034

Elymus canadensis var. canadensis (1997)
POACEAE
Elymus canadensis L. var. canadensis
U.S.A., Wyoming, Park County: Northern Absaroka Area: road on south side of the North Fork Shoshone River, ca 5 air mi E of Wapiti.
Elev. 5600 ft.
River margins and irrigation ditch and riparian area. Phenology: flowering.
Accession: USFS 855679, Barcode: USFS0039033

Elymus canadensis var. canadensis (2002)
POACEAE
Elymus canadensis L. var. canadensis
U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: mesa in Rochelle Hills, ca 1 air mi E of School Creek, ca 2.5 air mi SSE of Thunder Basin Work Center; ca 17.5 air mi ESE of Wright; ca 48 air mi SSE of Gillette.
Bottom of the canyon. Phenology: flowering & fruiting.
Annotations:
1. Elymus canadensis L. var. canadensis
Annotated by Peter J. Ebertowski.
Accession: RM (unaccessioned)

U.S.A., Wyoming, Converse County: Thunder 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.
Elev. 4290 ft.
Banks along the river. Phenology: fruiting.
Annotations:
1. Elymus canadensis L. var. canadensis
Annotated by Peter J. Ebertowski.
with Peter Ebertowski
Accession: RM (unaccessioned)

U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: Black Thunder Creek on Keeline or Forest Road 930, ca 20 air mi E of Wright; ca 43 air mi SSE of Gillette.
Creek bed. Phenology: flowering & fruiting.
Accession: RM (unaccessioned)

U.S.A., Wyoming, Niobrara County: Thunder Basin National Grassland and Vicinity: tributary of Cow Creek, on Cow Creek or County Road 3, ca 18 air mi NNW of Lance Creek; ca 27 air mi WSW of Mule Creek Junction.
Grassy creek bed. Phenology: flowering & fruiting.

U.S.A., Wyoming, Niobrara County: Thunder Basin National Grassland and Vicinity: Lance Creek on County Road 13, ca 16.5 air mi NNE of Lance Creek; ca 45 air mi SSW of Newcastle.
Creek bed. Phenology: fruiting.

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: hills above and NW of Walker Creek on County Road 43, ca 31 air mi NE of Douglas; ca 17 air mi WNW of Lance Creek.
Grassy ravine with occasional ponderosa pine. Phenology: flowering & fruiting.

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: Lightning Creek on County Road 43, ca 34 air mi NE of Douglas; ca 17 air mi ESE of Bill.
Along creek. Phenology: fruiting.

U.S.A., Wyoming, Niobrara County: Thunder Basin National Grassland and Vicinity: tributary of Little Cow Creek on Cow Creek Road, ca 41 air mi NE of Douglas; ca 18.5 air mi E of Bill.
Creek bed. Phenology: flowering & fruiting.

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: Cow Creek Buttes on East Bill or Forest Road 958, ca 43 air mi NNE of Douglas; ca 41 air mi SE of Wright.
Creek bed. Phenology: fruiting.

U.S.A., Wyoming, Weston County: Thunder 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.
Creek bed. Phenology: fruiting.

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: Antelope Creek on Forest Road 949, ca 31 air mi SE of Wright; ca 17 air mi NNE of Bill.

U.S.A., Wyoming, Weston County: Thunder Basin National Grassland and Vicinity: Cheyenne River on Dull Center or County Road 7A, ca 34 air mi ESE of Wright; ca 26 air mi NE of Bill.
Streambank. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Thunder 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.
Roadside along creek floodplain. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder 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.
Spring surrounded by Rocky Mountain juniper and ponderosa pine. Phenology: fruiting.
Peter J. Ebertowski, 2479. 8/2/2002.

U.S.A., Wyoming, Campbell County: Thunder 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.
Creek bank and floodplain. Phenology: flowering & fruiting.
Peter J. Ebertowski, 2540. 8/2/2002.

U.S.A., Wyoming, Crook County: Thunder Basin National Grassland and Vicinity: Belle Fourche River off County Road 103, ca 6.5 air mi SW of Moorcroft; ca 25 air mi ESE of Gillette.
Roadside along river. Phenology: fruiting.
Peter J. Ebertowski, 2592. 8/4/2002.

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: Stinking Water Creek on County Road 31, ca 34 air mi SSW of Wright; ca 42 air mi NNW of Douglas.
Grassy creek bottom. Phenology: flowering.

U.S.A., Wyoming, Weston County: Thunder 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.

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: along Sand Creek above and below confluence with Coal Draw, ca 20 air mi NW of Bill; ca 46 air mi NNW of Douglas.
Stream channel. Phenology: flowering & fruiting.
with B. E. Nelson

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: Cheyenne River ca 0.5 mi E and downstream of Meadow Creek, ca 19 air mi NE of Bill; ca 33 air mi SE of Wright.
Stream bank. Phenology: fruiting.
with B. E. Nelson

U.S.A., Wyoming, Weston County: Thunder Basin National Grassland and Vicinity: Beaver Creek at lower end of Sixmile Basin on dirt road ca 0.7 air mi N of Wyo Hwy 450, ca 8.5 air mi WSW of Newcastle; ca 23 air mi SSE of Upton.
Creek bank with willow and grasses. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Thunder 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.
Creek bank. Phenology: fruiting.

U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: Cabin Canyon on dirt road ca 0.7 air mi NW of Bishop Road, ca 20 air mi SE of Gillette; ca 17 air mi SW of Moorcroft.
Canyon floor dominated by wild ryes. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder 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.
Wide flat creek bank dominated by Spartina and Cirsium. Phenology: fruiting.

U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: ridge and ravines leading to Wild Horse Creek on gravel road off York or Forest Road 900, ca 30 air mi NNE of Gillette; ca 30 air mi NNW of Moorcroft.
Grassy ravine bordered by ponderosa pine on slopes. Phenology: fruiting.

U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: ridge above and NE of Duck Creek, on gravel road ca 1 air mi SE of Rocky Point or County Road 85, ca 38 air mi NNE of Gillette; ca 39 air mi NNW of Moorcroft.
Grassy ravine with ponderosa pine. Phenology: flowering & fruiting.

U.S.A., Wyoming, Niobrara County: Thunder Basin National Grassland and Vicinity: Hungry Hollow on Cheyenne River or County Road 6, ca 34 air mi SSW of Newcastle; ca 52 air mi SSE of Upton.
Creek bank. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Thunder 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.
Creek bank. Phenology: flowering.

U.S.A., Wyoming, Niobrara County: Thunder Basin National Grassland and Vicinity: Hungry Hollow on Cheyenne River or County Road 6, ca 34 air mi SSW of Newcastle; ca 52 air mi SSE of Upton.
Gully in sagebrush. Phenology: buds.

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: washes W of and draining to Bobcat Creek, on Forest Road 958, ca 10 air mi E of Bill; ca 37 air mi NNE of Douglas.
Creek bed. Phenology: buds.

U.S.A., Wyoming, Converse County: Thunder Basin National Grassland and Vicinity: Cow Creek Buttes along and including Owl Creek, on four wheel drive road off Forest Road 958, ca 15 air mi E of Bill; ca 39 air mi NNE of Douglas.
Creek bed. Phenology: buds.

U.S.A., Wyoming, Niobrara County: Thunder Basin National Grassland and Vicinity: Lance Creek, 0.5 mi S of confluence with Greasewood Creek on Greasewood or County Road 10, ca 37 air mi N of Lusk; ca 39 air mi SSW of Newcastle.
Roadside on floodplain with open canopy of cottonwoods. Phenology: flowering.

U.S.A., Wyoming, Niobrara County: Thunder Basin National Grassland and Vicinity: grassland ca 1.8 mi N of Greasewood Creek, on Greasewood or County Road 10, ca 40 air mi N of Lusk; ca 24 air mi NE of Lance Creek.
Ravine in grassland. Phenology: flowering.

U.S.A., Wyoming, Niobrara County: Thunder Basin National Grassland and Vicinity: Marcus Draw, on Redbird or County Road 11, ca 19 air mi N of Lance Creek, ca 42 air mi SSW of Newcastle.
43.2988° N, 104.579° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO!
Grassy floor of draw. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: Big RW Creek, ca 1 mi N of its confluence with Black Thunder Creek, on Keeline or Forest Road 930, ca 18 air mi E of Wright; ca 40 air mi SSE of Gillette.
Ravine in sagebrush grassland. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: draw running E off Artesian Draw, on Wyo Hwy 387, ca 26 air mi SW of Wright; ca 21 air mi NE of Midwest.
Ravine with narrow stream of coalbed methane well runoff. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder 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.
Narrow gully in ravine floor. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder 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.
Narrow ravine floor with occasional ponderosa pine. Phenology: fruiting.

U.S.A., Wyoming, Converse County: Thunder 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.
Creek bank. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder 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.

U.S.A., Wyoming, Campbell County: Thunder 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.
Ravine with occasional boxelder and ash on slopes. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder 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.
Creek bed. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Thunder 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.
Ravine floor, with scattered big sagebrush. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Thunder Basin National Grassland and Vicinity: Raven Creek, on County Road 26, ca 14 air mi S of Moorcroft; ca 18 air mi W of Upton.
Roadside in sagebrush grassland. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Thunder Basin National Grassland and Vicinity: Buffalo Creek, on Watt Road, ca 8 air mi SSE of Moorcroft ca 14 air mi ENE of Upton.
Grassy gully with occasional silver sagebrush. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder 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.
Creek bank. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: Porcupine Creek, on two-track off Matheson or County Road 70, ca 13 air mi SE of Wright; ca 49 air mi S of Gillette.
Low creek bank. Phenology: fruiting.

U.S.A., Wyoming, Converse County: Thunder 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.
Creek bank. Phenology: fruiting.

U.S.A., Wyoming, Converse County: Thunder 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.
Creek bank. Phenology: fruiting.

U.S.A., Wyoming, Campbell County: Thunder Basin National Grassland and Vicinity: hills between Sunny Draw and Beckwith Creek, on two-track off Forest Road 973, ca 23 air mi SE of Wright; ca 52 air mi SW of Newcastle.
Narrow, shallow gully in mosaic of sagebrush and sagebrush grassland. Phenology: fruiting.

U.S.A., Wyoming, Weston County: Thunder 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.

U.S.A., Wyoming, Weston County: Thunder 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.

U.S.A., Wyoming, Crook County: Thunder 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.
Steeply sloped river bank. Phenology: fruiting.

U.S.A., Wyoming, Park County: Yellowstone National Park: Gallatin Range: Bighorn Pass; 15 mi SW of Mammoth.
Open area in spray zone with Mertensia ciliata and Heracleum sphondylium. Phenology: fruiting.
Accession: RM 824456, Barcode: RM0019273

U.S.A., Wyoming, Park County: Absaroka Mountains: North Fork Shoshone River Drainage: Shoshone National Forest: just N of Eagle Creek Campground, ca 44 mi W of Cody along access road to summer homes N of U.S. Hwy 14, 16, & 20.
Disturbed area at base of rock outcroppings with Phacelia hastata and Bromus inermis. Phenology: fruiting.
Accession: RM 825372, Barcode: RM0019752

U.S.A., Montana, Carbon County: East Bridger, along Burlington Northern tracks E of town.
T6S R23E S22
Disturbed area around grain elevators with Distichlis stricta, Bromus tectorum, and Kochia scoparia. Phenology: flowering & fruiting.
Accession: RM 819951, Barcode: RM0019455

U.S.A., Wyoming, Park County: Bighorn Basin: Cody city reservoir S of town.
T52N R101W S6
Disturbed areas along paths adjacent to reservoir with Kochia scoparia, Amaranthus retroflexus, Convolvulus arvensis, and Euphorbia glyptosperma. Phenology: flowering & fruiting.

U.S.A., Wyoming, Fremont County: [location and coordinates withheld]
Berm between river and ditch; Rosa and Salix shrubs dominant; fine sandy soil. Phenology: fruiting.
Annotated by Stuart Markow.
Accession: (unaccessioned)

U.S.A., Wyoming, Teton County: [location and coordinates withheld]
Along waterway and upslope. Phenology: fruiting.

U.S.A., New Mexico, Colfax County: NM Hwy 72, 4 road mi E of I-25 (milepost 4).
Grassy roadside. Phenology: flowering & fruiting.

U.S.A., New Mexico, Colfax County: NM Hwy 72, 26 road mi E of I-25 (milepost 26).
Oak and ponderosa pine woodland and roadside. Phenology: flowering & fruiting.

U.S.A., New Mexico, Colfax County: I-25 at interchange 455, ca 1 air mi NNW of Raton.
Juniper-oak road cuts. Phenology: flowering.

U.S.A., Idaho, Adams County: Payette National Forest and Vicinity: Cuddy Mountains Area: Rocky Comfort Flat, ca 21 air mi NW of Council; ca 20.5 air mi W of New Meadows.
Rocky basalt soil dominated by Elymus spicatus and Festuca idahoensis, interspersed with scablands dominated by Poa secunda and Artemisia tripartita. Phenology: flowering.

U.S.A., Idaho, Washington County: Payette National Forest and Vicinity: Hitt Mountains Area: Mann Creek by Forest Road 009 from guard station south ca 0.3 road mi, ca 10.5 air mi WNW of Midvale; ca 14 air mi SSW of Cambridge.
Roadside riparian area; dominated by Populus tricocarpa, Alnus, Philadelphus lewisii, and Pinus ponderosa wildlife tree not collected. Phenology: flowering & fruiting.

U.S.A., Idaho, Washington County: Payette 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.
Rocky basalt soil, moderately steep, mostly south-facing slope with Elymus spicatus, mixed shrubs and forbs, and Pyrrocoma radiata. Phenology: fruiting.
with Darren L. Pearson

U.S.A., Idaho, Valley County: Payette National Forest and Vicinity: Salmon River Mountains Area: Pilot Peak Lookout, ca 2.5 air mi E of South Fork Guard Station; ca 10 air mi SE of Warren.
Road to lookout summit, south-facing slope. Phenology: flowering & fruiting.
with Denise L. Fairbanks

U.S.A., Colorado, Grand County: [location and coordinates withheld]
Brushy stream bottom with scattered narrowleaf cottonwood, Douglas fir, and blue spruce.
with Michelle Nelson
Accession: (unaccessioned)

U.S.A., Colorado, Larimer County: Riparian Plants of the Cache la Poudre River: vicinity of Grey Rock Trailhead, ca 7 mi W of Teds Place on Colo Hwy 14.
T8N R70W S6
Riverbank with Pinus ponderosa, Toxicodendron rydbergii.

U.S.A., South Dakota, Fall River County: Buffalo Gap National Grassland and Vicinity: ca 14 mi NNE of Smithwick and immediately S of the Fall River and Custer County lines.
On ridgetop of sand and silt soils. Phenology: flowering & fruiting.

U.S.A., Nebraska, Sioux County: Oglala National Grassland and Vicinity: ca 18 air mi NW of Crawford and 1/2-3/4 mi N of Orella Road in Whitehead Creek.
Soils are silty and moist. Associated plants growing in creek floor are Salix spp., Prunus virginiana and Ribes spp. Phenology: flowering & fruiting.

U.S.A., Nebraska, Sioux County: Oglala National Grassland and Vicinity: ca 14.5 air mi NW of Crawford on Hudson-Meng Bison Bonebed Trail, 0.5 mi SW of Toadstool Geologic Park.
Soils are heavy white clay below with clay sand mix at top of "toadstool" geologic formations. Phenology: flowering & fruiting.

U.S.A., Nebraska, Sioux County: Oglala National Grassland and Vicinity: ca 12.5-13 air mi NW of Crawford.
On rocky ridge and side slopes. Phenology: flowering & fruiting.

U.S.A., Nebraska, Sioux County: Oglala National Grassland and Vicinity: ca 12.5-13 air mi NW of Crawford.
In deep drainage. Phenology: flowering & fruiting.

U.S.A., South Dakota, Pennington County: Buffalo Gap National Grassland and Vicinity: ca 22 air mi ENE of Hermosa and 1 mi W of Swinehart Hill on Rapid Creek.
On the banks of the creek. Phenology: flowering & fruiting.

U.S.A., South Dakota, Pennington County: Buffalo Gap National Grassland and Vicinity: ca 7.5 air mi W of Scenic and 1 mi SE of the confluence of Indian Creek and the Cheyenne River.
On the banks of creek bottom and creek in Artemesia cana shrubland. Phenology: flowering & fruiting.

U.S.A., South Dakota, Custer County: Buffalo Gap National Grassland and Vicinity: ca 22 air mi SE of Hermosa on the Cheyenne River.
On west bank of river in sand soil. Phenology: flowering & fruiting.

U.S.A., South Dakota, Custer County: Buffalo Gap National Grassland and Vicinity: ca 8.5 air mi SE of Hermosa in Red Shirt Creek.
In drainage of creek and steep slopes of drainage; soils are rock substrate with clayey silt. Phenology: flowering & fruiting.

U.S.A., Nebraska, Sioux County: Oglala 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.
Along 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.
with Steve Popovich

U.S.A., Nebraska, Sioux County: Oglala National Grassland and Vicinity: ca 6-6.5 air mi NW of Crawford, Little Cottonwood Creek.
In creek of actively flowing water.. Phenology: flowering & fruiting.

U.S.A., South Dakota, Jackson County: Buffalo Gap National Grassland and Vicinity: ca 6-6.5 air mi ESE of Cottonwood in South Fork Bad River.
Soils are silty clay. Phenology: flowering & fruiting.

U.S.A., South Dakota, Jackson County: Buffalo Gap National Grassland and Vicinity: ca 2 air mi ESE of Cottonwood in Cottonwood Creek.
Soils are silty clay. Phenology: flowering & fruiting.

U.S.A., South Dakota, Jackson County: Buffalo Gap National Grassland and Vicinity: ca 4.5 air mi SSE of Cottonwood in Cottonwood Creek.
Soils are silty clay. Phenology: flowering & fruiting.

U.S.A., South Dakota, Custer County: Buffalo Gap National Grassland and Vicinity: ca 12 air mi ESE of Fairburn and 1/4 mi due S of County Road 18 at French Creek.
On north and east facing slopes of creek, soils are rock and gravel. Phenology: flowering & fruiting.
with Don Hazlett

U.S.A., South Dakota, Pennington County: Buffalo Gap National Grassland and Vicinity: ca 6.5 air mi SW of Scenic in Indian Creek.
Soils are clay overlain with gravel and sand. Phenology: flowering & fruiting.

U.S.A., South Dakota, Pennington County: Buffalo Gap National Grassland and Vicinity: ca 7 air mi SW of Scenic in Indian Creek.
In deep cut side drainage of the creek, soils are clay overlain with gravel. Phenology: flowering & fruiting.

U.S.A., South Dakota, Pennington County: Buffalo Gap National Grassland and Vicinity: ca 4 air mi SW of Scenic in Indian Creek.
In deep cut side drainage, soil is clay overlain with gravel. Phenology: flowering & fruiting.

U.S.A., South Dakota, Jackson County: Buffalo Gap National Grassland and Vicinity: ca 2 air mi NE of Cactus Flats in Big Buffalo Creek.
Wooded draw exclosed from grazing, soils are loam and loamy clay. Phenology: flowering & fruiting.

U.S.A., South Dakota, Jackson County: Buffalo Gap National Grassland and Vicinity: ca 10.5 air mi SE of Cottonwood in Yellow Draw.
Around perimeter of reservoir, soils are loamy clay. Phenology: flowering & fruiting.

U.S.A., South Dakota, Jackson County: Buffalo Gap National Grassland and Vicinity: ca 2 1/4 air mi WSW of Kadoka, Kadoka Lake.
On the shores near and around lake, soils are clay loam. Phenology: flowering & fruiting.

U.S.A., South Dakota, Jackson County: Buffalo Gap National Grassland and Vicinity: ca 3.5 air mi NW of Cactus Flats.
In reservoir at the head of an ephemeral creek, soils are clay loam. Phenology: flowering & fruiting.

U.S.A., South Dakota, Jackson County: Buffalo Gap National Grassland and Vicinity: ca 4 air mi SE of Cactus Flats, Martin Dam.
In clay pan drainage of a stock dam, soils are clay. Phenology: flowering & fruiting.

U.S.A., Nebraska, Sioux County: Oglala National Grassland and Vicinity: ca 12 air mi NW of Crawford in Little Cottonwood Creek.
Perennial stream, soils are sand and loamy clay. Phenology: flowering & fruiting.

U.S.A., South Dakota, Pennington County: Buffalo Gap National Grassland and Vicinity: ca 17 air mi SSE of Wall in Conata Basin.
At site of large reservoir, soils are white mucky clay. Phenology: flowering & fruiting.
with David Jones

U.S.A., South Dakota, Pennington County: Buffalo Gap National Grassland and Vicinity: ca 10.5 air mi WSW of Wall in Big Sage Creek.
Soils are clay. Phenology: flowering & fruiting.
with David Jones

U.S.A., New Mexico, Rio Arriba County: Carson 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.
Along creek riparian area. Phenology: flowering & fruiting.

U.S.A., New Mexico, Mora County: Carson 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.
Roadside and adjacent shale roadcut. Phenology: buds.

U.S.A., New Mexico, Mora County: Carson 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.
Roadside and adjacent shale roadcut. Phenology: flowering.

U.S.A., New Mexico, Mora County: Carson 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.
Roadside and adjacent shale roadcut. Phenology: flowering & fruiting.

U.S.A., New Mexico, Taos County: Carson National Forest and Vicinity: Picuris Pueblo Indian Reservation: southwest corner of Reservation, ca 0.5 air mi W of Chamisal in thinning treatment area.
Moist area where arroyo runs into culvert under road; disturbed area near road. Phenology: flowering & fruiting.

U.S.A., New Mexico, Colfax County: Carson 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.
Pinyon/juniper woodland with mixed conifers in drainage areas; old roads with Melilotus officinalis. Phenology: flowering & fruiting.

U.S.A., Wyoming, Park County: Bighorn Basin: along Heart Mountain Canal access road, ca 7.5 air mi NNE of Cody and ca 17.5 air mi ESE of Powell.
Drainage channel. Phenology: flowering & fruiting.

U.S.A., Wyoming, Park County: Bighorn Basin: along County Road 1AB at Clarks Fork Canyon, ca 25 air mi NNW of Cody.
Riparian with Juniperus. Phenology: flowering & fruiting.

U.S.A., Wyoming, Big Horn County: Bighorn Basin: along South Fork Elk Creek, ca 7.5 air mi SSW of Basin and 6.5 air mi W of Manderson.
Riparian on sandy soil; sagebrush on sandy soil. Phenology: flowering & fruiting.
with Michelle Wilson

U.S.A., Wyoming, Washakie County: Bighorn 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.
Bottom of small canyon below a spring. Phenology: flowering & fruiting.

U.S.A., Wyoming, Park County: [location and coordinates withheld]
Silt/sand bars and banks along stream channel through sagebrush/greasewood. Phenology: flowering & fruiting.

U.S.A., Wyoming, Park County: Bighorn Basin: in the vicinity of the confluince of Parker Spring Gulch and Fifteenmile Creek, ca 4 air mi N of Whistle Berry Hill, ca 11.5 air mi ENE of Meeteetse.
Silt/sand or cobble bars and banks along stream channels. Phenology: flowering & fruiting.

U.S.A., Wyoming, Park County: Bighorn Basin: along Fifteenmile Creek at Fifteenmile Creek or BLM Road 1429 crossing, ca 3 air mi W of Dead Indian Hill, ca 14 air mi E of Meeteetse.
Silt/sand or cobble bars, banks of stream channel, and sandy flats with mixed species cottonwood woodland. Phenology: flowering & fruiting.

U.S.A., Wyoming, Big Horn County: Bighorn Basin: along South Fork Elk Creek, ca 7 air mi W of Manderson; ca 8 air mi SSW of Basin.
Silt/sand bars and banks along the stream channel with scattered cottonwood and tamaris thickets. Phenology: flowering & fruiting.

U.S.A., Wyoming, Big Horn County: Bighorn Basin: along Elk Creek ca 3.5 air mi above the Big Horn River, ca 6.5 air mi WNW of Manderson; ca 5.5 air mi SSW of Basin.
Silt bars and banks along stream channel with scattered cottonwood. Phenology: flowering & fruiting.

U.S.A., Wyoming, Washakie County: Bighorn 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.
Dry reservoir bed. Phenology: flowering & fruiting.

U.S.A., Wyoming, Washakie County: Bighorn Basin: along East Fork Nowater Creek, ca 3 air mi W of Joe Henry Fork, ca 11.5 air mi SE of Worland.
Silt/sand bars, banks along stream channel, and adjacent sandy flats with scattered cottonwoods. Phenology: flowering & fruiting.

U.S.A., Wyoming, Washakie County: Bighorn Basin: along Lower and Upper Hanover canals at the end of Lane 7, ca 7.5-8 air mi NNE of Worland.
Ditch banks. Phenology: flowering & fruiting.

U.S.A., Wyoming, Park County: Bighorn Basin: along County Road
Reservoir. Phenology: flowering & fruiting.
with Michelle Wilson

U.S.A., Wyoming, Washakie County: Bighorn Basin: E of Little Slick Creek, ca 4.9 air mi ESE of Worland.
Irrigation ditch. Phenology: flowering & fruiting.

U.S.A., Wyoming, Big Horn County: Bighorn Basin: along Orchard Bench or County Road 1121 and Elk Creek, ca 5 air mi S of Basin.
Mixed riparian and sagebrush. Phenology: flowering & fruiting.

U.S.A., Colorado, Montrose County: San Miguel and Lower Dolores River Drainages: Dolores River Drainage: Roc Creek.
Riparian area with Salix exigua and Distichlis spicata. Phenology: flowering & fruiting.
with Laura Cosse
Accession: (unaccessioned)

U.S.A., Colorado, San Miguel County: San Miguel and Lower Dolores River Drainages: Sunshine Mesa at wilderness boundary.
Meadow with mixed forbs and grasses. Phenology: flowering & fruiting.

U.S.A., Colorado, Mesa County: [location and coordinates withheld]
Edge of irrigated alfalfa pasture. Phenology: flowering & fruiting.

U.S.A., Colorado, Montrose County: Upper Dolores River Drainage and Adjacent Areas: Slick Rock Canyon, ca 19 air mi W of Naturita, at mouth of Spring Canyon and surrounding areas northside of Dolores River.
Salix, Fraxinus, Tamarisk, and pinyon-juniper on a west facing side canyon. Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County: Wetlands and Adjacent Areas: Sybille Creek, ca 29 air mi N of Laramie.
Moist banks and flood plains. Phenology: fruiting.

U.S.A., Wyoming, Platte County: Wetlands and Adjacent Areas: Antelope Creek and pond formed by damming, ca 14 air mi NNW of Chugwater.
Moist banks and flood plains. Phenology: flowering.

U.S.A., Wyoming, Natrona County: Wetlands and Adjacent Areas: confluence of Cottonwood Creek and Alcova Reservoir, ca 30 air mi SW of Casper.
Moist banks. Phenology: flowering.

U.S.A., Wyoming, Fremont County: Wetlands and Adjacent Areas: Sweetwater River, ca 10 air mi NW of Muddy Gap Junction.
Moist banks. Phenology: flowering.

U.S.A., Wyoming, Natrona County: Wetlands and Adjacent Areas: Dugout Creek, ca 9 air mi W of Midwest.
Growing along stagnant creek. Phenology: fruiting.

U.S.A., Wyoming, Washakie County: Wetlands and Adjacent Areas: Tensleep Creek, ca 5 air mi NE of Ten Sleep.
Along moist sandy, rocky creek bed. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Wetlands and Adjacent Areas: Belle Fouche River, ca 16 air mi NNE of Wright.
Along river banks. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Wetlands and Adjacent Areas: Belle Fouche River, ca 1 air mi NW of Moorcroft.
Dry uplands. Phenology: fruiting.

U.S.A., Wyoming, Weston County: [location and coordinates withheld]
Moist spring outlet and creek banks. Phenology: fruiting.

U.S.A., Wyoming, Converse County: Near La Prele Reservoir.
42.6937° N, 105.6056° W; NAD 83, uncertainty 2 mi., Digital Map
Common in irrigation ditches. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Along Sand Creek, near Beulah.
44.5147° N, 104.091° W; NAD 83, uncertainty 1 mi., Digital Map
Dry roadside. Along Sand Creek Phenology: flowering.

U.S.A., Wyoming, Platte County: 5 mi N of Wheatland.
42.1292° N, 104.9359° W; NAD 83, uncertainty 1 mi., Digital Map
Common, roadside ditches. Phenology: flowering.

U.S.A., New Mexico, Rio Arriba County: Santa Fe National Forest and Vicinity: Jemez Mountains: Canyon de la Alameda to Rio Gallina, 14 air mi NNE of Gallina. SW for 1 air mi in canyon to Rio Gallina then 0.4 air mi E along river.
Steep-walled drainage of mixed conifers. Phenology: flowering.

U.S.A., New Mexico, Rio Arriba County: Santa Fe National Forest and vicinity: Jemez Mountains: Arroyo de los Frijoles, 2.5 air mi W of Abiquiu. From corral at start of Barranca Trail 111 3.4 air mi S to Frijoles Spring.
Riparian with cottonwoods through canyon of soft sedimentary rock in pinyon/juniper woodland. Phenology: flowering & fruiting.

U.S.A., New Mexico, San Miguel County: Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: Forest Road 83 E of Lower Colonias in vicinity of Ruidoso Ridge, 7 air mi ESE of Pecos. From Forest Road 83/203 junction SW on Forest Road 83 0.8 air mi.
Roadside through mixed conifer forest and skirting sedimentary rock bands on descent of exposed ridge. Phenology: flowering.

U.S.A., New Mexico, San Miguel County: Santa 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.
Canyon bottom roadside, riparian, and bluffs of volcanic rock in mixed conifer forest. Phenology: flowering.

U.S.A., New Mexico, Santa Fe County: Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: Santa Fe Municipal Watershed, 3 air mi ENE of Santa Fe, in vicinity of Randall Davey Audubon Center. E on road to 0.2 air mi.
Roadside through pinyon-juniper woodland along contour, and just S of the river. Wet roadside culverts. Phenology: flowering.

U.S.A., New Mexico, Rio Arriba County: Santa Fe National Forest and Vicinity: Jemez Mountains: 6.5 road mi N of Espanola; intersection of U.S. Hwy 285 and NM Hwy 74, to 1 mi SE.
Roadside. Phenology: flowering.

U.S.A., New Mexico, Los Alamos County: [location and coordinates withheld]
Roadside and canyon bottom on tuft/volcanics in ponderosa pine forest. Phenology: flowering & fruiting.

U.S.A., New Mexico, San Miguel County: Santa 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.
River bottom, mostly juniper with Russian olive and narrowleaf cottonwood. Phenology: flowering & fruiting.

U.S.A., New Mexico, San Miguel County: Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: 0.5 air mi S of Pablo Creek at forest boundary, 12 air mi WSW of Las Vegas.
Gentle north-facing ponderosa pine slope with scattered Gambels oak and grass below. Phenology: flowering & fruiting.

U.S.A., Wyoming, Sheridan County: Seridan Experimental Farm.
Phenology: flowering & fruiting.

U.S.A., Wyoming, Laramie County: Pine Bluffs.
41.1764° N, 104.0815° W; NAD 83, uncertainty 1 mi., Nat. Geog. TOPO!
Phenology: flowering & fruiting.

U.S.A., Wyoming, Sweetwater County: Wamsutter.
Phenology: fruiting.

U.S.A., Wyoming, Platte County: Hartville.
Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County: Dunn's Ranch.
On the river banks Phenology: flowering & fruiting.

U.S.A., Wyoming, Niobrara County: Manville.
42.7791° N, 104.6177° W; NAD 83, uncertainty 1 mi., Nat. Geog. TOPO!
Creek bottoms. Phenology: flowering & fruiting.

U.S.A., Wyoming, Uinta County: Fort Laramie.
Ditch banks. Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County:
Aven Nelson, s.n.. //1903.

U.S.A., Wyoming: Grown on Experimental Farm.
Aven Nelson, s.n.. //1903.
with Elias Nelson

U.S.A., Wyoming, Park County: Near old mine ca 6 mi SW of Deaver on U.S. Hwy 14.
Moist ditch in salt brush desert. Phenology: flowering & fruiting.

U.S.A., Wyoming, Fremont County: Riverton, below the canal that runs between W. Washingtonand W. Main Street in the 200 block.
T1N R4E S34
Under a grroup of Populus deltoides, growing on a hillside. Phenology: fruiting.

U.S.A., Wyoming, Park County: Pearson's Ranch, Clarks Fork Valley.
In heavy loam. Phenology: flowering & fruiting.
with Dorothy Pearson

U.S.A., Wyoming, Teton County: 20 mi S of Jackson; Sulphur Spring Bar.
River bank. Phenology: flowering & fruiting.
with E. N. Wilcox

U.S.A., Wyoming, Park County: North Fork Shoshone River Drainage: Absaroka Mountains: along U.S. Hwy 14, 16, & 20, ca 1/4 mi E of Aspen Creek along the river.
On road fill-rubble along river.

U.S.A., Wyoming, Park County: Absaroka Mountains:N Fork of Shoshone River Drainage: Rattlesnake creek along Hwy 14, 16 and 20, Just E of Buffalo Bill State Park.

U.S.A., Wyoming, Park County: Absaroka Mountains: Along U.S. Hwy 14, ca 3/4 mi W of Buffalo Bill Dam.
On road shoulder. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: Buffalo.

U.S.A., Wyoming, Platte County: Ditch east of Wheatland.
Roadside. Phenology: flowering & fruiting.
Gregory P. Hallsten, 103. 7/9/1982.
with Quentin D. Skinner and Alan A. Beetle

U.S.A., Wyoming, Goshen County: East side of North Platte River.
Sandy flood plain. Phenology: flowering & fruiting.
Gregory P. Hallsten, 127. 7/9/1982.
with Quentin D. Skinner and Alan A. Beetle

U.S.A., Wyoming, Niobrara County: Cheyenne River.
43.421° N, 104.1315° W; NAD 83, uncertainty 700 ft., Nat. Geog. TOPO!
Sand, bottom of river. Phenology: flowering & fruiting.
Gregory P. Hallsten, 163. 7/10/1982.
with Quentin D. Skinner and Alan A. Beetle

U.S.A., Wyoming, Niobrara County: Cheyenne River.
43.421° N, 104.1315° W; NAD 83, uncertainty 700 ft., Nat. Geog. TOPO!
Sand, bottom of river. Phenology: flowering & fruiting.

U.S.A., Wyoming, Platte County: 2 mi N of Wheatland.
42.0832° N, 104.9517° W; NAD 83, uncertainty 1 mi., Nat. Geog. TOPO!
Roadside, cultivated land. Phenology: flowering & fruiting.
with T Mosquin

U.S.A., Wyoming, Platte County: Between Fish Creek Road and Cottonwood Creek, 28 road mi NW of Wheatland.
Elev. 1616 m.
Dry sand draw. Phenology: flowering & fruiting.

U.S.A., Wyoming, Platte County: Along Brush Creek, 17 road mi E of Wheatland.
Creek banks, dry, some standing water. Phenology: fruiting.

U.S.A., Wyoming, Johnson County: Middle Fork Powder River.
43.651° N, 106.8476° W; NAD 83, uncertainty 0.5 mi., Digital Map
Wet river bottom. Phenology: flowering & fruiting.

U.S.A., Wyoming, Platte County: Laramie River near Wheatland, S of Wyo Hwy. 311 where highway crosses river.
Growing on moist sandy slope on the first step up from the floodplain with Panicum virgatum and Andropogon gerardii. Grown in greenhouse and pressed 15 April 1975. Phenology: flowering & fruiting.

U.S.A., Wyoming, Converse County: Northeast Converse County.
T38N R68W
Moist bank. Phenology: flowering & fruiting.
with Robert Lang

U.S.A., Wyoming, Natrona County: Bates Hole: Bolton Creek, ca 3.5 air mi W of Wyo Hwy 487; ca 1.5 air mi NW of Haystack Buttes; ca 18 air mi S of Casper.
Populus angustifolia stand along narrow creek channel on mixed alluvium with understory of Elymus trachycaulus, Agrostis stolonifera, and Melilotus officinalis. Phenology: fruiting.

U.S.A., Wyoming, Natrona County: North Platte River Valley: east bank of North Platte River, ca 0.1 mi N of confluence of Bates Creek.
Salix exigua community with open herbaceous layer of Poa pratensis, Hordeum jubatum, and Cirsium arvense on floodplain of cobbles and alluvium. Phenology: fruiting.

U.S.A., Wyoming, Platte County: Camp Guernsey: near Warm Springs.
Elev. 1359 m.
Common on level floodplain in sand with Artemisia, Bromus, Calamovilfa, Euphorbia, and Populus spp. Phenology: fruiting.
Patricia P. Douglas, 442. 8/21/1995.
with B. E. Nelson, R. M. Smith, N. E. Hastings

U.S.A., Wyoming, Converse County: Douglas, Roush place.

U.S.A., Wyoming, Campbell County: Black Thunder Strip Mining Area: North Prong of Thunder and Little Thunder creeks.
Stream bottom wet; blue grama, saltgrass, western wheatgrass, prairie cordgrass; loamy, bare, clayey soil (Absted and Bone series). Phenology: flowering & fruiting.
with D. W. Sabinske

U.S.A., Wyoming, Fremont County: South edge of Lander.
Dry vacant lots Phenology: fruiting.

U.S.A., Wyoming, Laramie County: 3 mi W of Cheyenne.
With Poa , and Solidago canadensis. Phenology: flowering & fruiting.

U.S.A., Wyoming, Big Horn County: Lovell.
Roadside. Phenology: flowering & fruiting.

U.S.A., Wyoming, Carbon County: Upper North Platte and Laramie River Drainages: Saratoga Lake E of Wyo Hwy 130, ca 1.2 air mi ENE of Saratoga; ca 18 air mi N of Encampment.
Wetlands and disturbed gravelly area surrounding lake. Phenology: flowering.

U.S.A., Wyoming, Laramie County: Southeast Plains: Muddy Creek E of Wyo Hwy 214, ca 1 mi S of I-80.
Dense stand of mixed Juncus and grasses on floodplain directly above the stream channel on silty soil. Phenology: fruiting.

U.S.A., Wyoming, Laramie County: Southeast Plains: North Branch Little Bear Creek, ca 25 air mi N of Cheyenne; ca 6 mi W of I-25.
Uplands bordering streamside vegetation. Phenology: fruiting.

U.S.A., Wyoming, Laramie County: Southeast Plains: tributary of Bear Creek, ca 25 air mi N of Cheyenne; ca 8 mi W of I-25.
Salix exigua community with patches of Symphoricarpos occidentalis and an understory of Elymus canadensis, Carex lanuginosa, and Solidago canadensis on sandy-gravel floodplain. Phenology: fruiting.

U.S.A., Wyoming, Platte County: Southeast Plains: Little Cottonwood Draw, ca 5 air mi E of the Laramie Power Station SE of the Greyrocks Road.
Dense equisetum laevigatum stand with Scirpus pungens, Glycyrrhiza, Asclepias, and grasses on silty-sandy floodplain. Phenology: fruiting.

U.S.A., Wyoming, Goshen County: Wyoming Game and Fish Department's Rawhide unit along the North Platte River, ca 3 air mi SE of Lingle; ca 7.3 air mi WNW of Torrington.
Dry sandy soil on an island. Phenology: flowering & fruiting.
Steve Kilpatrick, RH 173. 7/22/1982.
with J. L. Robinson

U.S.A., Wyoming, Fremont County: Along the Popo Agie River below the rise in Sinks Canyon
T32N R100W S8
Phenology: fruiting.

U.S.A., Wyoming, Fremont County: Near Ocean Lake, along the big drain, Peterson property.

U.S.A., Wyoming, Platte County: SE Plains: ca 1.5 air mi W of I-25 adj. to Brookie Rd, N end of Wheatland.
Fallow field dominated by Bromus inermis at edge of grove of Populus deltoides and Elaeagnus. Phenology: flowering & fruiting.
with Jane Struttmann

U.S.A., Wyoming, Laramie County: Southeastern Plains: Little Bear Creek, ca 0.9 mi W of I-25; ca 23 mi N of Cheyenne.
Dry, chalky-ashy beds of creek below cliff of white welded ash; weedy site with Cirsium arvense, Grindelia squarrosa, and Agrostis stolonifera. Phenology: fruiting.

U.S.A., Wyoming, Laramie County: Southeast Plains: "island" in Crow Creek, ca 0.6 mi NW of confluence of Crow and Diamond creeks; just N of "FamCamp" area near west F. E. Warren Air Force Base on the west side of Cheyenne; ca 1.8 air mi N of Wyo Hwy 210.
41.1567° N, 104.875° W; NAD 83, uncertainty 700 ft., Nat. Geog. TOPO!
Edge of willow thicket and meadow of Agrostis stolonifera, Glycyrrhiza lepidota, Elymus canadensis, and Solidago on mesic, but not flooded, loamy clay alluvium on banks of creek. Phenology: fruiting.

U.S.A., Wyoming, Fremont County: Along Riverton No. 2 canal, SE of the cemetary.
T1N R4E S29

U.S.A., Colorado, Jackson County: North-central Colorado: North Park: along County Road 6 in the vicinity of Trappers Gulch at the south end of Battle Ridge, ca 11 air mi WNW of Cowdrey; ca 17 air mi NW of Walden.
Roadside on rolling sagebrush steppe. Phenology: flowering & fruiting.
Accession: RM 761654

, Colorado, Jackson County: North-central Colorado: Rabbit Ears Range: ca 1 1/4 air mi S of Slack-Weiss Reservoir and ca 2 air mi WNW of the north end of Arapaho Ridge, ca 21.5 air mi S of Walden.
Moist meadows and willow thickets.

U.S.A., Wyoming, Teton County: Southwestern Absarokas: Teton Wilderness: ca 12 air mi NE of Moran Junction, near Pacific Creek.
Open lodgepole pine forest mixed with fir and spruce.

U.S.A., Wyoming, Teton County: Southwestern Absarokas: Teton Wilderness: ca 11.5 mi N of Togwotee Pass.
Spruce-fir forest with some lodgepole pine.

U.S.A., Wyoming, Teton County: Southwestern Absarokas: Yellowstone National Park: Mariposa Lake and its outlet (creek).
Open, dry meadow in spruce-fir forest.

U.S.A., Wyoming, Teton County: Southwestern Absarokas: Teton Wilderness: ca 2.5 air mi N of Gravel Lake, ca 17.5 air mi NE of Moran.
Ridgetop amidst spruce-fir forest and dry, open slope with southern exposure.

U.S.A., Wyoming, Teton County: Southwestern Absarokas: ca 30 air mi NW of Dubois at vicinity of Wind River Lake.
Spruce-fir forest with some whitebark pine.

U.S.A., Wyoming, Teton County: Southwestern Absarokas: Teton Wilderness: ca 18.5 air mi NE of Moran Junction above Two Ocean-North Buffalo Fork Trail.
Open meadows with SE exposure on fine limestone talus.

U.S.A., Wyoming, Park County: Southwestern Absarokas: Teton Wilderness: along North Fork Butte Creek, W of Thorofare Buttes, ca 45 air mi SW of Cody.
Gravel bars along creek.

U.S.A., Wyoming, Teton County: Southwestern Absarokas: Teton Wilderness: ca 9 air mi NE of Moran Junction along Pacific Creek and Whetstone Creek trails.
Streamsides and dry meadows with mixed lodgepole forests.

U.S.A., Colorado, La Plata County: Trimble hot springs.
Phenology: fruiting.
Accession: RM 148250

U.S.A., Colorado, El Paso County: Rattlesnake Butte.
In disturbed west-facing field in moist dark soil. Phenology: fruiting.
with R. Jones
Accession: RM 529376

U.S.A., Colorado, Arapahoe County: Engelwood: field N of 6136 S Niagara Court; near housing development.
Occasional in bottom of grassy ravine. Phenology: flowering & fruiting.

U.S.A., Colorado, Baca County: Campo Research Natural Area: Commanche Natinal Grassland: W of U.S. Hwy 385; 3.5 mi S of Campo.
Located on 4% slope with 344 degree aspect with Sitanion hystrix and Sporobolus cryptandrus. Phenology: fruiting.

U.S.A., Colorado, Delta County: Black Canyon.
Also in Montrose County. Phenology: flowering & fruiting.
Annotated by Theodor Holm.

U.S.A., Colorado, Delta County: Black Canyon.
Also in Montrose County. Phenology: flowering & fruiting.
Annotated by C. L. Porter in 1943.

U.S.A., Colorado, La Plata County: Durango.
Annotated by F. L. Scribner.
with F. S. Earle and S. M. Tracy

U.S.A., Colorado, Baca County: Sand Canyon, 25 mi S of Pritchett, near Oklahoma.
Dry grassy meadow. Phenology: flowering & fruiting.

U.S.A., Colorado, Yuma County: Republican River Valley; between Burlington and Wray.

U.S.A., Colorado, Gilpin County: Georgetown.

U.S.A., Colorado, Routt County: Routt National Forest: along trail above Bear Ears Ranger Station.
Abundant in aspen woodland on 5% northwest slope in deep clay loam. Phenology: fruiting.
Accession: USFS 418676

U.S.A., New Mexico, Sandoval County: Jemez Biology Camp.
Base of waterfall. Phenology: fruiting.

U.S.A., Colorado, no county County:
Earl Lynd Johnston, 318. //1906.

U.S.A., Colorado, no county County:
Earl Lynd Johnston, 391. //1906.

U.S.A., Colorado, Weld County: Pawnee Buttes.
Wet draw. Phenology: fruiting.

U.S.A., New Mexico, Santa Fe County: Santa Fe National Forest: 1 mi N of Glorieta.
Common in park. Phenology: fruiting.
Accession: USFS 418670

U.S.A., Colorado, Las Animas County: Stonewall.
Annotated by C. L. Porter in 1943.
Florence Beckwith, 26A. 8//1915.

U.S.A., Colorado, Boulder County: Near Boulder.

U.S.A., Colorado, Grand County: Middle Park: near Hot Sulphur Springs.
40.0731° N, 106.102° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO!
Phenology: vegetative only.
with W. W. Robbins

U.S.A., Colorado, Boulder County: Near Boulder.
Francis Ramaley, A. 94. 6/27/1900.

Plains and foothills. Phenology: flowering & fruiting.

U.S.A., Colorado, Weld County: Windsor.
George E. Osterhout, 1295. 8/1/1896.

U.S.A., Colorado, Weld County: New Windsor.
Annotated by C. L. Porter in 1942.
George E. Osterhout, 206. 7/12/1892.

U.S.A., Colorado, Weld County: Windsor.
George E. Osterhout, 7960. 7/4/1933.

U.S.A., Colorado, Hinsdale County: San Juan National Forest: Los Pinos: near Lake Fork.
Frequent in aspen woodland on 10 degree southeast slope in deep sandy loam with Festuca, Muhlenbergia and Sporobolus. Phenology: fruiting.
Accession: USFS 418675

U.S.A., Colorado, Gunnison County: 3 mi W of Gold Hill; junction of Switzweland Park Road; near Mount Alto.
Abundant along roadside. Phenology: fruiting.

U.S.A., Colorado, Grand County: Ca 1.5 mi below the summit of Rabbit Ears Pass; along Hwy 40; near roadside.
Openings in Pinus and Picea forest near roadside. Phenology: fruiting.

U.S.A., Colorado, Larimer County: Fort Collins.

U.S.A., Colorado, Clear Creek County: Idaho Springs.

U.S.A., Colorado, Larimer County: Roosevelt National Forest: Poudre River Canyon.
Common in ponderosa pine in open rocky timber. Phenology: fruiting.
Annotated by Jason R. Swallen.

U.S.A., New Mexico, Rio Arriba? County: Jicarilla District: Cottonwood Canyon.
Sparse in canyon bottom. Phenology: fruiting.

U.S.A., New Mexico, Colfax County: Philmont Scout Ranch, near Cimarron: Dean Canyon, near junction with Chandler Canyon Road.
Common along road. Phenology: flowering & fruiting.

U.S.A., New Mexico, Colfax County: Philmont Scout Ranch, near Cimarron: near Olympia Camp.
Common along stream. Phenology: flowering & fruiting.

U.S.A., Colorado, Conejos County: Rio Grande River: Pinon Hills.
Infrequent in riverine alluvium on banks of river with Agropyron Rhus and Salix. Phenology: flowering & fruiting.
with J. Anderson

U.S.A., Colorado, Boulder County: Bluebell Canyon; 1 mi W of Boulder.
In ponderosa pine & Douglas Fir forest at foothill zone on north-facing slope. Phenology: flowering & fruiting.
with Leopold A. Charette

U.S.A., Colorado, Baca County: Breaks of Picture Canyon.
with R. C. Wittmann

U.S.A., Colorado, El Paso County: Pike National Forest: Manitou Park.
Ponderosa pine in coarse granitic soil. Phenology: flowering & fruiting.
William M. Johnson, WJ-1. 7/1/1936.

U.S.A., Colorado, Otero County: Rocky Ford.

U.S.A., Colorado, Boulder County: Sunshine Canyon, near Boulder.

U.S.A., Colorado, Boulder County: Bear Canyon, near Boulder.

U.S.A., Colorado, Boulder County: Flagstaff Mountain, near Boulder.

U.S.A., Wyoming, Albany County: Laramie Range: just S of Beaver Mountain between Stove Draw and Grouse Creek, ca 6.8 air mi W of Laramie Peak; ca 35.5 air mi S of Douglas.
Sagebrush with graminoids and forbs on lee side of slope. Phenology: fruiting.
1. Elymus canadensis L. var. canadensis .

U.S.A., Wyoming, Converse County: [location and coordinates withheld]
Open areas among the thickets in the creek bottom. Phenology: fruiting.
1. Elymus canadensis L. var. canadensis .

U.S.A., Wyoming, Converse County: Laramie 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.
Roadside and adjacent bladed areas. Phenology: fruiting.
1. Elymus canadensis L. var. canadensis .

U.S.A., Wyoming, Natrona County: Laramie 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.
Stream bank and thickets along the stream. Phenology: fruiting.
Annotated by B. A. Packer.

U.S.A., Wyoming, Natrona County: Laramie Range: County Road 403, ca 0.2 to 1.2 air mi W of Twin Buttes.
Mudstone ridge towards buttes. Phenology: fruiting.
Annotated by B. A. Packer.
with Amy J. Roderick and Cherie Winner

U.S.A., Wyoming, Converse County: Laramie Range: along Blue Nose Creek; ca 18 air mi SW of Douglas.
Along road. Phenology: fruiting.
with T. McGowan

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: north shore of Columbia River at China Bend, ca 9 air mi SW of Northport; east bank of mouth of Flat Creek and 1 mi north along river bank.
Riverbank above and below floodline; sand, cobble patches, ponderosa pine. Phenology: flowering & fruiting.

U.S.A., Wyoming, Sublette County: Wyoming/Salt River Ranges: Wyoming Range: along South Fork North Horse Creek, ca 35 air mi W of Pinedale.
Old clearcut in spruce-fir forest. Phenology: fruiting.
with Russ Nelson

U.S.A., Wyoming, Washakie County: Big Horn Mountains: along Nowood River at the foot of Mahogany Butte, ca 27 air mi S of Ten Sleep, ca 9.5 air mi SSW of Big Trails.
Both entire and pinnatifid leaf forms together. Phenology: flowering & fruiting.

U.S.A., Wyoming, Hot Springs County: Bighorn Basin: ca 0.5 air mi W of Kirby, ca 11 air mi N of Thermopolis on Gebo Road.
Roadside and borrow pits.

U.S.A., Wyoming, Washakie County: Bighorn Basin: along Cottonwood Creek, ca 7.5 air mi WNW of Winchester; ca 20.5 air mi SW of Worland.
Roadside.

U.S.A., Wyoming, Hot Springs County: Bighorn 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.
Willow-rose-gooseberry thickets in creek bottom.

U.S.A., Wyoming, Teton County: Southwestern Absarokas: on the Snake River side of the Snake river-Mink Creek Divide, ca 1.8 air mi S of Yellowstone National Park, ca 50 air mi NNE of Jackson.
Regenerating open old burn.
with Neil Snow

U.S.A., Wyoming, Platte County: [location and coordinates withheld]
Grassy bench at edge of river. Phenology: flowering & fruiting.
with Jan Pollet

U.S.A., Wyoming, Platte County: [location and coordinates withheld]
Floodplains. Phenology: flowering & fruiting.
with Jan Pollet

U.S.A., Wyoming, Campbell County: Powder River Basin: ca 42 air mi N of Gillette, ca 8 air mi S of Montana on Wyo Hwy 59, just N of Deep Creek on Little Powder River.
Common along river with Solidago and Helianthus. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Powder River Basin: ca 13 air mi S of Rozet, ca 20.5 air mi SE of Gillette on Bishop Road along Canyon Creek.
Infrequent in clay in stream bed with Beckmannia and Echinochloa. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Powder River Basin: ca 13 air mi NNE of Reno Junction, ca 24 air mi SSE of Gillette along Belle Fourche River.
Occasional along river with Conyza and Muhlenbergia. Phenology: flowering & fruiting.

U.S.A., Wyoming, Converse County: Powder 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.
Common on sand bar with Xanthium and Chenopodium. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: Powder River Basin: ca 6 air mi S of Kaycee on TTT Road (Lone Bear Road on map).
Bottomland. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: Powder River Basin: ca 7 air mi SSE of Kaycee on I-25, along the South Fork Powder River.
Slopes along the river. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: Big Horn Mountains: along Clear Creek just off U.S. Hwy 16, ca 5.3 air mi WSW of Buffalo.
Dry, stony canyon bottom. Phenology: flowering & fruiting.

U.S.A., Wyoming, Fremont County: Wind River Basin: aquiduct on south side of Lake Cameahwait, ca 20 air mi ENE of Riverton.
Moist area beside running water. Phenology: flowering & fruiting.

U.S.A., Wyoming, Fremont County: Wind River Basin: eastern edge of Sand Mesa, W of Boysen Reservoir, ca 22.5 air mi ENE of Riverton.
Banks along "drain" to reservoir.

U.S.A., Wyoming, Fremont County: Wind River Basin: Haines farm, ca 9 mi W of Riverton on U.S. Hwy 26.
Trees north of house. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Powder River Basin: ca 18 air mi SE of Reno Junction.
Streambed with standing water, slopes of deep cut gully, margins of dried holding pond, upland terraces; gully. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: [location and coordinates withheld]
Plains and flats along creek, ditches; roadside. Phenology: flowering & fruiting.
with Mary Alice Sanguinetti

U.S.A., Wyoming, Campbell County: [location and coordinates withheld]
Plains, flats, along draw; roadside. Phenology: flowering & fruiting.
with Mary Alice Sanguinetti

U.S.A., Wyoming, Campbell County: Powder River Basin: along Cottonwood Creek, ca 1.5 air mi NNE of Adon.
Eroded plain and flats along creek, gravel roadside; flats, roadside. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Powder River Basin: along Cottonwood Creek, ca 1.5 air mi NNE of Adon.
Eroded plain and flats along creek, gravel roadside; roadside. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Powder River Basin: ca 4 air mi ENE of Adonis.
Sagebrush plains, ponderosa pine slopes, ravines, eroded slopes, creek bottom; slopes. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: Powder River Basin: along Willow Creek, ca 3 air mi NW of North Pumpkin Butte.
Plains, flats along creek, eroded banks; flats. Phenology: flowering & fruiting.

U.S.A., Wyoming, Converse County: Powder River Basin: ca 1 air mi N of Orpha.
Plains along highway right-of-way, dry ditches; ditch. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: [location and coordinates withheld]
Shale ridge-outcrops, covered with ponderosa pine, sagebrush grasslands, eroded slopes, wet depressions and small holding pond, draws; roadside near wet depression. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: [location and coordinates withheld]
Rocky hills, plains, holding pond, wet mud along creek beds, flats, moist grassy ditches; roadside. Phenology: flowering & fruiting.

U.S.A., Wyoming, Sheridan County: [location and coordinates withheld]
Plains, rocky slopes, draw with standing water, creek and meadows; roadside. Phenology: flowering & fruiting.

U.S.A., Wyoming, Campbell County: Powder River Basin: Dry Trail Creek, along Trail Creek Road, 3.8 road mi E of Wyo Hwy 59.
Sandy cuts in plains, small stream and draw; along stream. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: [location and coordinates withheld]
Sandy flats along lake, edges and meadows along creek; meadows. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: Powder River Basin: Jack Moore Reservoir, along Boxelder Creek, ca 1.5 air mi E of south end of Lake De Smet.
Flats around margin of holding pond, meadow along creek, gravelly roadside, hilly plains on clinker; meadow along creek. Phenology: flowering & fruiting.

U.S.A., Wyoming, Johnson County: Powder River Basin: Boxelder Creek, ca 5 air mi ENE of Lake De Smet.
Meadows along creek, sandy plains, ridges; meadow. Phenology: flowering & fruiting.

U.S.A., Wyoming, Sheridan County: Powder River Basin: East Twin Creek, ca 2 air mi W of Parkman.
Creek, meadows along creek, cherry thickets, sagebrush plains, hill with roadcut along side, disturbed area along drainage; roadside. Phenology: fruiting.

U.S.A., Wyoming, Johnson County: Powder River Basin: ca 3 air mi W of Kaycee.
Shale slopes with sandstone outcrops and drainages. Phenology: flowering & fruiting.

U.S.A., Wyoming, Goshen County: [location and coordinates withheld]
Roadside and fence line. Phenology: buds.

U.S.A., Wyoming, Converse County: [location and coordinates withheld]
Cottonwood woodland with Elaeagnus and Shepherdia. Phenology: flowering & fruiting.

U.S.A., Wyoming, Platte County: Southern Powder River Basin/Southeastern Plains: Hartville Uplift: along Patten Creek ca 0.5 mi W of Wyo Hwy 270 on Patten Creek or County Road 208, ca 16 air mi ESE of Glendo; ca 12.3 air mi N of Guernsey.
Overflow areas and vernal pools in creek bottom. Phenology: flowering.

U.S.A., Wyoming, Converse County: Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Walker Creek just N of Manning or County Road 53, ca 20 air mi NE of Douglas.
Floodplain meadows and sparsely wooded stream banks. Phenology: fruiting.

U.S.A., Wyoming, Converse County: Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Dry Creek ca 0.5 mi above and N of Lightning Creek, ca 0.5 air mi W of Niobrara County on Walker Creek or County Road 43, ca 29.5 air mi NE of Douglas.
Edge of stream channel and adjacent steep banks. Phenology: fruiting.

U.S.A., Wyoming, Niobrara County: Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Deep Creek on Field or County Road 50 SE of Cow Creek Buttes, ca 17 air mi NW of Lance Creek, ca 30.5 air mi NW of Lusk.
43.21° N, 104.8908° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO!
Sand bars, flats, and low benches along stream channel. Phenology: flowering & fruiting.

U.S.A., Wyoming, Niobrara County: [location and coordinates withheld]
Drier meadows and swales above the river. Phenology: flowering & fruiting.

U.S.A., Wyoming, Laramie County: Southern 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.
Drier cobblestone gravel bars. Phenology: fruiting.

U.S.A., Wyoming, Goshen County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek ca 1/4 mi above Little Bear Creek on County Road 153, ca 14.3 air mi SE of Chugwater; ca 38.5 air mi SW of Torrington.
Meadows and low benches along the stream. Phenology: flowering & fruiting.

U.S.A., Wyoming, Goshen County: [location and coordinates withheld]
Under trees and thickets in the stream bottom. Phenology: fruiting.

U.S.A., Wyoming, Niobrara County: Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Lance Creek off Lance Creek or County Road 14, ca 7.3 air mi N of Lance Creek; ca 27.5 air mi NNW of Lusk.
Large draw leading to the creek. Phenology: flowering & fruiting.

U.S.A., Wyoming, Natrona County: Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Middle Fork Casper Creek on Oil Camp or County Road 210, ca 2 mi W of the north end of Pine Mountain, ca 3 air mi SSE of Powder River; ca 34.5 air mi WNW of Casper.
In drying stream channel, low areas, and adjacent banks. Phenology: fruiting.

U.S.A., Wyoming, Natrona County: Southern 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.
Sand bars, stream bank, and low moist benches. Phenology: fruiting.

U.S.A., Wyoming, Converse County: [location and coordinates withheld]
Roadside and adjacent fence row. Phenology: flowering & fruiting.

U.S.A., Wyoming, Niobrara County: Southern Powder River Basin/Southeastern Plains: Hat Creek Breaks: between S Bar or County Road 62 and S Bar Creek, ca 18 air mi NE of Lusk; ca 15 air mi N of Van Tassell.
Steep slopes at edge of marshy area with thickets of juniper, boxelder, and chokecherry. Phenology: flowering & fruiting.

U.S.A., Wyoming, Niobrara County: Southern Powder River Basin/Southeastern Plains: Hat Creek Breaks: between S Bar or County Road 62 and S Bar Creek, ca 18 air mi NE of Lusk; ca 15 air mi N of Van Tassell.
Sandy slopes with sandstone outcrops and scattered ponderosa pine. Phenology: flowering & fruiting.

U.S.A., Wyoming, Goshen County: Southern 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.
River bank and low wet areas. Phenology: flowering & fruiting.

U.S.A., Wyoming, Goshen County: Southern 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.
Open flats adjacent to the river. Phenology: fruiting.

U.S.A., Wyoming, Laramie County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Atlas or County Road 224 ca 0.5-1 air mi N of Lodgepole Creek and ca 1 air mi W of I-25, ca 16 air mi N of Cheyenne.
Slopes and edge of a gravelly wash through rolling plains. Phenology: flowering.

U.S.A., Wyoming, Laramie County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: in the canyon along Spring Creek, ca 34 air mi NNW of Cheyenne; ca 11 air mi ENE of Farthing (Iron Mountain).
Canyon bottom along a sandy wash. Phenology: flowering.

U.S.A., Wyoming, Goshen County: Southern Powder River Basin/Southeastern Plains: Hartville Uplift: along a draw leading into Rawhide Creek ca 1 mi W of Middle Rawhide Butte, ca 11 air mi NW of Jay Em; ca 38.5 air mi NW of Torrington.
Benches and meadows among boxelder and cottonwood trees. Phenology: flowering.

U.S.A., Wyoming, Niobrara County: Southern Powder River Basin/Southeastern Plains: Hartville Uplift: along a triburtary of Silver Springs Creek on Silver Springs or County Road 54, ca 8.5 air mi SSW of Lusk.
Bottom of a rocky draw. Phenology: flowering.

U.S.A., Wyoming, Converse County: Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: upper Gillam Draw on the west side of Pine Ridge, ca 53 air mi NW of Douglas; ca 11.5 air mi SW of Ross.
Silt at the base of bluffs along the drainage channel. Phenology: flowering.

U.S.A., Wyoming, Converse County: Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Box Creek just below Bobby Draw off Highland Loop or County Road 32, ca 12.7 air mi SW of Bill; ca 22 air mi N of Douglas.
Stream bank and adjacent moist areas. Phenology: flowering.

U.S.A., Wyoming, Niobrara County: Southern Powder River Basin/Southeastern Plains: Hat Creek Breaks: along Joss or County Road 19 between Lance Creek and Chalk Buttes, ca 6.3 air mi N of Keeline; ca 17 air mi WNW of Lusk.
Sandy wash. Phenology: fruiting.

U.S.A., Wyoming, Goshen County: Southern 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.
Seep area along small drainage. Phenology: fruiting.
with David Reilly and Jim Cahill

U.S.A., Wyoming, Goshen County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek ca 0.5 mi above the mouth of Spring Run, ca 17.7 air mi W of LaGrange, ca 34.5 air mi SSW of Torrington.
Steep banks at the edge of the creek and sand bars. Phenology: fruiting.
with Tim Chumley and Robbin Romberg

U.S.A., Wyoming, Goshen County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek ca 3/4 mi W of the mouth of Dater Creek and ca 4 air mi S of Castle Rocks, ca 11 air mi W of La Grange; ca 30 air mi SSW of Torrington.
Creek banks and adjacent woodlands and meadows. Phenology: fruiting.
with Tim Chumley and Robbin Romberg

U.S.A., Wyoming, Goshen County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: below the Fort Laramie Canal ca 2.5 air mi WSW of Fort Laramie (town), ca 20.5 air mi WNW of Torrington.
Meadows and banks adjacent to a slough. Phenology: flowering.

U.S.A., Wyoming, Converse County: Southern 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.
Large disturbed area in the bottom of a large dry wash. Phenology: flowering.
Annotated by Stuart Markow.

U.S.A., Wyoming, Converse County: Southern 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.
Large disturbed area in the bottom of a large dry wash. Phenology: flowering.

U.S.A., Wyoming, Platte County: [location and coordinates withheld]
Sandy plains and slopes with adjacent irrigation canals. Phenology: buds.

U.S.A., Wyoming, Goshen County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole Rim: Mers Hill, ca 10 air mi E of Slater.
Sandstone outcrops and sandy slopes. Phenology: buds.

Sandy plains and road cuts. Phenology: flowering.

U.S.A., Wyoming, Laramie County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Lodgepole Creek on both sides of County Road 148, 5 air mi N of I-80, ca 23.4 air mi ENE of Cheyenne; ca 2 1/2 air mi N of Burns.
Flats above the creek. Phenology: fruiting.

U.S.A., Wyoming, Laramie County: Southern 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.
Along creek. Phenology: fruiting.

U.S.A., Wyoming, Goshen County: Southern 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.
Along wooded and entrenched stream with steep to vertical banks. Phenology: fruiting.

U.S.A., Wyoming, Goshen County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek off Marsh or County Road 151, ca 17.5 air mi SW of Chugwater.
Along creek. Phenology: fruiting.

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Purgatoire River; E on County Road 75 from Exit 18 on I-25.
Riparian. Phenology: flowering & fruiting.
with Kenneth Elliott

U.S.A., Wyoming, Crook County: Black Hills: Bear Lodge Mountains: Reuter Campground, ca 3 air mi NW of Sundance.
Banks and slopes above a dry streambed in ponderosa woodland. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: Bear Lodge Mountains: Oak Creek drainage and ridge between Oak and Alum creeks, ca 6.5 air mi NNW of Aladdin; ca 23 air mi NNE of Sundance.
Wet draws and lower slopes. Phenology: flowering.

U.S.A., Wyoming, Crook County: Black Hills S of Beulah; Shepherd Gulch.
Box elders along creek. Phenology: flowering & fruiting.
with Q. D. Skinner and A. A. Beetle

U.S.A., Wyoming, Crook County: Black Hills: Sand Creek.
Stream bank. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: [location and coordinates withheld]
Stream bank. Phenology: flowering & fruiting.
with Dennis Horning

U.S.A., Colorado, Fremont County: [location and coordinates withheld]
Pinyon-juniper; riparian; very unusual soil. Phenology: flowering & fruiting.

U.S.A., Colorado, Pueblo County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Burnt Mill Road, ca 1.5 mi E of junction with County Road 221; ca 5.4 road mi E of Crow Cutoff/3R Road.
Juniper-pinyon. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: between Goldie Road and Elkhorn Creek, ca 6 air mi WNW of Seely.
Moist gully in sagebrush grassland. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: [location and coordinates withheld]
Grassland and eroded slopes N of old highway 14; Spearfish shale (redbeds). Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: Miller Creek, Garman Ranch, ca 9.5 air mi SSE of Devils Tower.
Deciduous woods along creek. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: [location and coordinates withheld]
Deciduous thickets in north-trending draw. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: Keyhole Reservoir, Belle Fourche River below dam; ca 12 air mi NE of Moorcroft.
River bank. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills, Redwater Creek ca 2.2 air mi WNW of Beulah.
Elev. 3600
Streambank Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: Redwater Creek; ca 2.2 air mi WNW of Beulah.
Grassland, roadside. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills, Redwater Creek, ca 2.2 air mi WNW of Beulah.
Grassland, roadside. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills, Coal Divide just N of I-90 (near parking area), ca 9 air mi SW of Sundance.
Grassland, draw above small reservoir. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills, Inyan Kara Creek E of HK Divide, ca 15 air mi W of Sundance.
Elev. 4200
Streambanks. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: Bear Lodge Mountains: head of Rocky Ford Creek, Government Valley Road, ca 3 air mi NNE of Sundance.
Grassland, on redbeds. Phenology: fruiting.

U.S.A., Wyoming, Crook County: [location and coordinates withheld]
Deciduous woods in draw. Phenology: flowering & fruiting.

Margins of reservoir in grassland. Phenology: flowering & fruiting.

Creek bottom in grassland-- streambanks. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Black Hills: West Plum Creek ca 4 mi N of confluence with East Plum Creek, ca 11 air mi NNW of Newcastle.
On earthen dam (in grassland). Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Devils Tower National Monument: below Spring #3.
Common on moist-wet soil in shady draw with Quercus macrocarpa. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Black Hills: Wet Parmlee Canyon near state line, ca 4.5 air mi SE of Four Corners.
Creek bottom in spruce-pine forest, disturbed soil along dirt road. Phenology: flowering & fruiting.
with Dennis Horning

U.S.A., Wyoming, Weston County: Black Hills: Elk Mountain area, Mix Spring, ca 14.5 air mi SSE of Newcastle.
Draw below spring. Phenology: flowering & fruiting.
with Dennis Horning

U.S.A., Wyoming, Weston County: [location and coordinates withheld]
Grassland, in draw between limestone sinkhole and reservoir. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Black Hills: East Upton Road, Kellog Reservoir; ca 6 air mi NNW of Osage.
Sagebrush-grassland (Artemisia tridentata) with scattered pines and junipers. Phenology: flowering & fruiting.

Sagebrush-grassland (Artemisia tridentata), in draw below culvert. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: Inyan Kara Mountain (east half); ca 13.5 air mi S of Sundance.
Grassland on southeast-facing slope, around old pit. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: Belle Fourche River Valley ca 6 air mi S of Colony, ca 17 air mi WNW of Belle Fourche, SD.
Cottonwood grove near river. Phenology: flowering & fruiting.

U.S.A., Wyoming, Weston County: Black Hills: U. S. Hwy 16 near State Line (Gillette Canyon), ca 9.5 air mi SE of Newcastle.
Roadside. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Powder River Basin: along Little Missouri River, ca 7 air mi N of Oshoto.
Flats and floodplain along river; floodplain. Phenology: flowering & fruiting.

U.S.A., Colorado, Fremont County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: over BLM boundary on U.S. Hwy 50, W of Parkdale.
Riparian and pinyon-juniper. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: ca 2 air mi NE of Aladdin.
Prairie, sandstone outcrops, and dry drainage; stream bed. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: ca 3 air mi NNE of Beulah.
Prairie and breaks with dry stream; prairie. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: ridge between Beaver Creek and the Belle Fourche River, ca 5 air mi NNW of Alva.
Sandy ridge with ponderosa pine woodlands and prairies; prairie. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: ca 4 air mi NW of summit of Inyan Kara Mountain.
Sagebrush slopes on red beds with moist drainage. Phenology: flowering & fruiting.

U.S.A., Wyoming, Crook County: Black Hills: Black Hills National Forest:
Annotated by Bonnie Heidel.
with N. Tashe

U.S.A., Colorado, Las Animas County: [location and coordinates withheld]
Top of hill to east; pinyon-juniper. Phenology: flowering & fruiting.

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Exit 23 on I-25.
Prairie-grassland with Artemisia and Sarcobatus. Phenology: flowering & fruiting.

U.S.A., Kansas, Morton County: Cimarron National Grassland: along Cimarron River and Turkey Trail ca 1 air mi E of Kan Hwy 27, ca 8.5 air mi N of Elkhart.
Low sand dunes in the river bottom, with scattered cottonwood. Phenology: flowering & fruiting.
Annotated by B. E. Nelson.

U.S.A., Kansas, Morton County: Cimarron National Grassland: along Cimarron River and Turkey Trail ca 4 air mi ENE of Kan Hwy 27, ca 10.5 air mi NNE of Elkhart.
Mature open cottonwood forest with Elymus understory on sand and silt. Phenology: flowering & fruiting.
Annotated by B. E. Nelson.

U.S.A., Kansas, Morton County: Cimarron National Grassland: along Cimarron River and Turkey Trail ca 4 air mi ENE of Kan Hwy 27, ca 10.5 air mi NNE of Elkhart.
Low sand dunes and sand flats along the river channel. Phenology: flowering & fruiting.
Annotated by B. E. Nelson.

U.S.A., Kansas, Morton County: Cimarron National Grassland: Point of Rocks and along the Santa Fe Trail and vicinity above the Cimarron River, ca 2.5 air mi W of Kan Hwy 27, ca 7 air mi NNW of Elkhart.
Chalky cliffs, sandstone cliffs, and slopes below. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: along County Road N, ca 4.5 air mi W of Timpas; ca 20.5 air mi SW of La Junta.
Right-of-way through level weedy rangeland. Phenology: flowering & fruiting.
with Bernadette Kuhn

U.S.A., Colorado, Baca County: Comanche National Grassland: Sand Canyon, ca 0.5 air mi N of Oklahoma, ca 15.5 air mi WSW of Campo.
Mature cottonwood forest with scattered juniper on sand or sandy silt substrate. Phenology: flowering & fruiting.

U.S.A., Colorado, Baca County: Comanche National Grassland: Cave Spring and below just off Holt Canyon, just N of Oklahoma, ca 13 air mi SW of Campo.
Riparian area in canyon bottom. Phenology: flowering & fruiting.
Annotated by Bernadette Kuhn.
with Bernadette Kuhn

U.S.A., Kansas, Morton County: Cimarron National Grassland: ca 7 mi N of Elkhart.
Near lone cottonwood, understory dominated by Elymus spp; sandy soil Phenology: flowering & fruiting.
Annotated by Bernadette Kuhn.

U.S.A., Kansas, Morton County: Cimarron National Grassland: at Recreation Area along the Cimarron River, 9.5 mi NNE of Elkhart.
Cottonwood gallery forest along the river with large stands of Tamarix; sandy soil. Phenology: flowering & fruiting.
Annotated by Bernadette Kuhn.

U.S.A., Kansas, Morton County: Cimarron National Grassland: Cimarron Campground, 9.5 mi N, 4 mi E of Elkhart.
Campground with Gleditsia, Juniperus, and Populus; sandy soil. Phenology: flowering & fruiting.

U.S.A., Colorado, Baca County: Comanche National Grassland: Holt Canyon, ca 28.5 air mi SW of Springfield.
With scattered Juniperus monosperma; canyon walls with Selaginella and Cheilanthes. Phenology: flowering & fruiting.
with B. E. Nelson

U.S.A., Colorado, Otero County: Comanche National Grassland: ca 9 air mi SE of La Junta.
E, 378678N; GPS Reading
Slough in shortgrass prairie dominated by Glyceria striata, Eleocharis sp. Phenology: flowering.

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Park Plateau: below North Lake Dam, S of Cuchara Pass on Colo Hwy 12.
Riparian and Quercus gambellii. Phenology: flowering & fruiting.

U.S.A., Colorado, Las Animas County: Comanche National Grassland: Potato Butte, ca 14.5 air mi SE of Kim.
Small pools below butte; dominated by Rhus aromatica, Bouteloua spp., and Elymus spp. Phenology: flowering & fruiting.
with Kelly Kindscher

U.S.A., Kansas, Morton County: Cimarron National Grassland: along the Cimarron River, ca 7.5 air mi NW of Elkhart.
Tamarix thickets along dry river bed. Phenology: flowering & fruiting.
with Joe Rankin

U.S.A., Colorado, Las Animas County: Comanche National Grassland: along Purgatoire River Valley near Rourke Ranch, ca 28 air mi SSW of La Junta.
River valley dominated by Solanum elaeagnifolium, Salsola tragus, Bromus tectorum, and Melilotus albus. Phenology: flowering & fruiting.
with Quinn Long, Jennifer Moody-Weiss, and Gianna Short

U.S.A., Colorado, Las Animas County: Comanche National Grassland: along Purgatoire River, ca 29 air mi SSW of La Junta.
Along river bank with Salix exigua thickets. Phenology: flowering & fruiting.
with Quinn Long, Jennifer Moody-Weiss, and Gianna Short

U.S.A., Colorado, Otero County: Comanche National Grassland: ca 15 air mi S of La Junta.
Weedy canyonside dominated by Juniperus monosperma. Phenology: fruiting.
with Joe Rankin

U.S.A., Colorado, Otero County: Comanche National Grassland and Vicinity: along Colo Hwy 350, ca 3.7 air mi SW of Timpas.
Limestone and shale roadcut, dominated by Oryzopsis hymenoides. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: Timpas Creek, just N of U.S. Hwy 350 and Bloom, ca 13 air mi SW of Timpas.
Scattered Populus and Juniperus monosperma; creek with Juncus sp. and Eleocharis sp. Phenology: flowering & fruiting.

U.S.A., Colorado, Las Animas County: [location and coordinates withheld]
Salix dominated riparian area. Phenology: flowering & fruiting.

U.S.A., Colorado, Las Animas County: [location and coordinates withheld]
Salix thickets along creek bank with scattered Sambucus, sandy soil. Phenology: flowering & fruiting.

Salix dominated spring, grazed. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: Picketwire (Purgatoire) Canyon at the dinosaur tracks, ca 26 air mi S of La Junta.
Salix-lined river banks with Eleochoris and Juncus. Phenology: flowering & fruiting.
with Cali Hemenway

U.S.A., Colorado, Las Animas County: Comanche National Grassland: along U.S. Hwy 160, ca 6 air mi WSW of Kim.
Roadside dominated by Melilotus officinalis and Cucurbita foetidissima. Phenology: flowering & fruiting.
with Cali Hemenway

U.S.A., Colorado, Baca County: Comanche National Grassland: on County Road M, ca 6 air mi NW of Campo.
Weedy roadside adjacent to Buchloë dactyloides dominated prairie. Phenology: flowering & fruiting.
with Cali Hemenway

U.S.A., Colorado, Baca County: Comanche National Grassland: Picture Canyon, ca 28 air mi SSW of Springfield.
Along sandstone cliffs at park entrance. Phenology: flowering & fruiting.

U.S.A., Colorado, Baca County: Comanche National Grassland: Picture Canyon, ca 28.5 air mi SSW of Springfield.
Along creek and sandstone canyon walls. Phenology: flowering & fruiting.

U.S.A., Colorado, Morton County: Cimarron National Grassland: ca 5.5 air mi NW of Elkhart.
Around stock tank, with large Ulmus, dominated by Chenopodium berlandieri. Phenology: flowering & fruiting.
with Joe Rankin

U.S.A., Kansas, Morton County: Cimarron National Grassland: at gas compressor station, ca 2 air mi S of Wilburton.
Sandsage prairie. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland and Vicinity: Ninemile Valley at junction of County Road 806 and Colo Hwy 109, ca 16 air mi SSE of La Junta.
Right of way dominated by Aristida purpurea and Cucurbita foetidissima. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: [location and coordinates withheld]
Road bank dominated by Elymus elymoides. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: [location and coordinates withheld]
Shortgrass prairie dominated by Aristida purpurea. Phenology: flowering & fruiting.

U.S.A., Coloradon, Otero County: Comanche National Grassland and Vicinity: at intersection of County Road Z and U.S. Hwy 350, ca 2 air mi SW of La Junta.
Roadside dominated by Bothriochloa laguroides and Aristida purpurea. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: [location and coordinates withheld]
Flowing irrigation canal dominated by Salix exigua and Rumex crispus. Phenology: flowering & fruiting.

Rock outcrops dominated by Stipa and Aristida. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: along two track leading to water tank, ca 28 air mi SW of La Junta.
Rocky prairie dominated by Cylindropuntia imbricata and Yucca glauca. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: ca 4 air mi NNW of Delhi; ca 34 air mi SW of La Junta.
At contructed fishing ponds with low water and heavy cover of Tamarix. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: between Rourke Road and Anderson Arroyo, ca 14 air mi SSW of La Junta.
Shortgrass prairie dominated by Quincula, Croton, and Yucca. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: ca 3 air mi NW of Bloom; ca 31 air mi SW of La Junta.
Base of shale hills, dominated by Juniperus monosperma and Stipa neomexicana. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: ca 32 air mi SW of La Junta.
Rocky prairie and adjacent ditch dominated by Bothriochloa laguroides. Phenology: flowering & fruiting.

U.S.A., Colorado, Las Animas County: Comanche National Grassland: near Poitrey Creek, ca 4.5 air mi SW of Villegreen; ca 11.5 air mi W of Kim.
At stockpond in pasture dominated by Buchloë dactyloides and Opuntia spp. Phenology: flowering & fruiting.

U.S.A., Colorado, Baca County: Comanche National Grassland: ca 7 air mi SE of Utleyville; ca 13 air mi SSE of Pritchett.
Pasture dominated by Opuntia and Yucca glauca. Phenology: flowering & fruiting.

U.S.A., Colorado, Baca County: [location and coordinates withheld]
Pasture dominated by Cirsium undutatum and Bothriochloa laguroides. Phenology: flowering & fruiting.

U.S.A., Colorado, Baca County: Comanche National Grassland: ca 4 air mi S of Liberty; ca 12 air mi SW of Springfield.
Pasture dominated by Artemisia filifolia. Phenology: flowering & fruiting.

U.S.A., Colorado, Baca County: Comanche National Grassland: abandoned Kirkwell Post Office, ca 16 air mi SSW of Pritchett.
Pasture dominated by Bothriochloa laguroides, Hilaria jamesii and Buchloë dactyloides. Phenology: flowering & fruiting.

Roadside bordering pasture dominated by Cenchrus longispinus and Aristida purpurea with stand of Ulmus near draw. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: along County Road 35, ca 12.5 air mi SE of La Junta,
Pasture dominated by Cylindropuntia imbricata and Buchloë dactyloides Phenology: flowering & fruiting.

Dominated by Melilotus officinalis, near large Ulmus. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: ca 10.5 air mi S of Timpas.
Sandy soil, shortgrass prairie dominated by Sporobolus and Aristida purpurea with scattered Juniperus monosperma. Phenology: flowering & fruiting.

U.S.A., Colorado, Otero County: Comanche National Grassland: Timpas Creek, ca 2.5 air mi NE of Mindemen; ca 8.5 air mi SW of La Junta.
Creek dominated by Populus and Salix. Phenology: fruiting.

Along arroyo dominated by Bothriochloa laguroides and Melilotus alba. Phenology: flowering & fruiting.
with Edith Hall, Lloyd Hall

Along sandstone walls of canyon with seeping spring; Prunus thicket and pools with Scirpus, Carex and Juncus. Asplenium platyneuron growing on rock wall. Phenology: flowering & fruiting.
with Edith Hall, Lloyd Hall

U.S.A., Colorado, Baca County: Comanche National Grassland: Middle Sand Canyon on County Road M, ca 15.5 air mi SSW of Pritchett.
Sandy prairie dominated by Sporobolus, Aristida, and Schedonnardus. Phenology: fruiting.

Sandstone canyon lined with Selaginella. Phenology: flowering & fruiting.
with Doug Sedoris

Rocky uplands with Dakota sandstone. Phenology: flowering & fruiting.
with Doug Sedoris

At spring. Phenology: flowering & fruiting.

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: on County Road 8.8, ca 2 mi W of junction with Colo Hwy 389 and north end of Branson.
Prairie. Phenology: flowering & fruiting.

U.S.A., Montana, Park County: Absaroka Range: Gallatin National Forest: along Forest Road 2532, ca 5 air mi SE of Livingston.
Mixed conifer forest with moist understory and periodic small meadows. Phenology: flowering & fruiting.
with Ken Elliott
Accession: RM 872058, Barcode: USFS0064852

U.S.A., Montana, Sweet Grass County: Along Airport Road, NE of Big Timber Airport, ca 1.5 air mi SSW of Big Timber.
Along road cut and packing area, in cobbley soil. Phenology: flowering & fruiting.
with Brian Elliott

U.S.A., Montana, Park County: Absaroka Range: between I-90 and the Yellowstone River in McAdows Canyon, ca 14.5 air mi ENE of Livingston.
Elev. 4280
Disturbed roadside, railroad tracks and river bank. Phenology: flowering & fruiting.
with Brian Elliott

U.S.A., Wyoming, Carbon County: Upper North Platte and Laramie River Drainages: Shirley Mountains: Pryor Flats Recreational Area, 0.5 air mi S of County Road 102; ca 20.2 air mi SW of Shirley Basin townsite.
North-facing slope and creek of aspen, limber pine, and subalpine fir. Phenology: flowering.

U.S.A., Wyoming, Carbon County: Medicine Bow Mountains: Mill Creek along Forest Road 241, ca 1/4 air mi SW of intersection with Forest Road 241.1E, ca 16 air mi W of Centennial; ca 3 air mi NE of Ryan Park.
Open, mixed conifer forest uphill from creek. Phenology: flowering.

U.S.A., Wyoming, Carbon County: Medicine Bow Mountains: Mill Creek along Forest Road 241, near intersection with Forest Road 200.3G, ca 17 air mi W of Centennial; ca 2 air mi N of Ryan Park.
Wet park to forest with willows and conifers. Phenology: flowering.

U.S.A., Wyoming, Carbon County: Medicine Bow Mountains: ponds just W of intersection of Forest Road 104 and Forest Road 107, ca 41 air mi WNW of Laramie; ca 10 air mi SW of Arlington.
Edge of ponds and woods. Phenology: flowering & fruiting.

U.S.A., Colorado, Pueblo County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: old highway at Stem Beach exit of I-25.
Disturbed roadside. Phenology: flowering & fruiting.
Annotated by Brian Elliott.

U.S.A., Montana, Judith Basin County: Little Belt Mountains: County Road 427 (Oriet Road) in Kibbey Canyon, ca 3 air mi S of junction with U.S. Hwy 87.
Road cut on east side of road; west aspect; 20-30% slope; Pinus ponderosa and Juniperus communis; shale outcrops. Phenology: fruiting.

U.S.A., South Dakota, Harding County: Custer National Forest: North Cave Hills: near the head of Schleichart Draw ca 0.5 air mi W of Riley Pass, ca 18 air mi N of Buffalo.
In and at the edge of green ash-buffaloberry-chokecherry thickets on sandy slopes below sandstone cliffs. Phenology: flowering & fruiting.
Accession: USFS 890169, Barcode: USFS0058402

U.S.A., South Dakota, Harding County: Custer National Forest: North Cave Hills: ca 0.5 air mi SE of Riley Pass, ca 18 air mi N of Buffalo.
Flats with Uranium mine spoil piles and area of ponderosa pine forest. Phenology: flowering & fruiting.

U.S.A., South Dakota, Harding County: Custer National Forest: Slim Buttes: on top and east side of buttes ca 3.5 air mi S of Reva Gap, ca 19.5 air mi SES of Buffalo.
Grass-forb meadow and open ponderosa pine woods. Phenology: fruiting.

U.S.A., South Dakota, Harding County: Custer National Forest: East Short Pine Hills: along a draw leading into Ward Gulch and to Spring No. 1, ca 17 air mi SW of Buffalo.
Base and lower part of bushy northerly-facing ponderosa pine slope. Phenology: flowering & fruiting.

U.S.A., Montana, Carter County: Custer National Forest: Long Pines: on the divide SE of Devils Canyon, ca 21 air mi SE of Ekalaka.
Slopes and ravines of a burned area. Phenology: flowering.

U.S.A., Montana, Carter County: Custer National Forest: Long Pines: at the mouth of Spring Canyon and just below at the northwest base of Rustler Ridge, ca 20.5 air mi SE of Ekalaka.
Open slope and ponderosa pine savannah. Phenology: flowering & fruiting.

U.S.A., Montana, Carter County: Custer National Forest: Long Pines: at the mouth of Spring Canyon and just below at the northwest base of Rustler Ridge, ca 20.5 air mi SE of Ekalaka.
Bushy stream bank and adjacent moist bench in open ponderosa pine forest. Phenology: flowering.

U.S.A., Montana, Carter County: Custer National Forest: Long Pines: Iron Spring and vicinity and down stream, ca 18 air mi SE of Ekalaka.
Stream bottom. Phenology: flowering & fruiting.
Accession: (unaccessioned), Barcode: USFS0050384

U.S.A., South Dakota, Harding County: Custer National Forest: West Short Pine Hills: in and around generally west-facing draws ca 2.5 air mi SSW of JK Butte, ca 10 air mi SSE of Camp Crook.
South-facing grass-dominated slope with scattered ponderosa pine. Phenology: buds.

U.S.A., South Dakota, Harding County: On 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.
Hillside dominated by green ash and grasses. Phenology: buds.

U.S.A., South Dakota, Harding County: Custer 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.
Grass-dominated butte top with occasional hardwood draws. Phenology: fruiting.

U.S.A., South Dakota, Harding County: Custer 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.
Large draw dominated by green ash, snowberry, and sedges. Phenology: flowering & fruiting.

U.S.A., Montana, Carter County: Custer National Forest: Long Pines: in the vicinity of Red Bluff Spring, just W of Forest Road 3117, ca 5 air mi SSW of Mill Iron and ca 16.5 air mi ESE of Ekalaka.
East-facing rocky slope with mix of ponderosa pine, green ash, and hardwood shrubs. Phenology: flowering & fruiting.

U.S.A., Montana, Carter County: Just 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.
Mixed grass and badlands. Phenology: fruiting.

U.S.A., Montana, Carter County: Custer 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.
Hardwood draw dominated by green ash and grasses. Phenology: flowering.

U.S.A., Montana, Powder River County: Custer 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.
Ponderosa pine and grass-dominated draw. Phenology: fruiting.

U.S.A., South Dakota, Harding County: Custer National Forest: South Cave Hills: in and around Timber Canyon, between Forest roads 3113 and 3137, ca 11.5 air mi N of Buffalo.
Green ash-dominated draw. Phenology: flowering.

U.S.A., South Dakota, Harding County: Custer National Forest: South Cave Hills: in and around McKenzie Gulch, S of Forest Road 3113, ca 10 air mi N of Buffalo.
Green ash-dominated draw. Phenology: fruiting.

U.S.A., South Dakota, Harding County: Custer 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.
Grass-dominated butte top. Phenology: fruiting.
with G. Gust

U.S.A., Montana, Carter County: Custer National Forest: Long Pines: just E of Forest Road 3117, ca 1/4 air mi SE of Iron Spring, ca 18 air mi NW of Camp Crook, SD.
Grass-dominated meadow into wind-thrown ponderosa pine woodland. Phenology: fruiting.
with G. Gust

U.S.A., Montana, Carter County: Custer 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.
Above margin of unnamed still-water pond. Phenology: fruiting.
with G. Gust

U.S.A., Montana, Carter County: Custer National Forest: Ekalaka Hills: in and E of Stagville Draw on Forest Road 3813 at Stagville Spring, SE past Forest Road 3813B to east boundary of Forest, ca 5.5 air mi SSE of Ekalaka.
Green ash and Prunus spp.-dominated draw. Phenology: fruiting.

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Picketwire Valley, ca 1 mi E of Cordova Plaza.
Annotated by Brian Elliott.

U.S.A., South Dakota, Custer County: Jewel Cave National Monument: U.S. Hwy 16 E of Jewel Cave Road.

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Culebra Range: Colo Hwy 12 at Romain Canyon, ca 2.3 road mi S of Monument Lake.
Annotated by Brian Elliott.

U.S.A., Nebraska, Kimball County: Pine Bluffs: along intermittant drainage to Lodgepole Creek, 1.8 air mi NE of Pine Bluffs (town).
Weedy sagebrush and grasses. Phenology: fruiting.
Annotated by Karin M. Guernsey.

U.S.A., Wyoming, Natrona County: Upper North Platte and Laramie River Drainages: Blue Gulch N of Wyo Hwy 220, ca 3.2 air mi NW of Alcova townsite.
Draw with sagebrush, rabbitbrush, and wild licorice. Phenology: flowering.

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: I-25 frontage road to Chicosa Canyon, SE of Hoehne exchange.

Pinus ponderosa, Quercus gambellii. Phenology: flowering & fruiting.
with Elizabeth Mark and Pete Schneider

U.S.A., Montana, Carter County: Custer National Forest: Chalk Buttes: to ca 0.5 air mi N of Trenk Pass on Forest Road 3816, ca 12 air mi SW of Ekalaka.
Ponderosa pine woodland on and near chalkstone buttes. Phenology: fruiting.

U.S.A., South Dakota, Harding County: Custer 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.
In the vicinity of hardwood draw with green ash, boxelder, and chokecherry. Phenology: fruiting.

U.S.A., Montana, Carter County: Custer National Forest: Long Pines: ca 0.5 air mi S of the junction of Forest roads 3818 and 3036, ca 3.5 air mi WNW of Lantis Spring and ca 22 air mi SE of Ekalaka.
Grass and sagebrush-dominated meadow. Phenology: fruiting.

U.S.A., Montana, Powder River County: Custer 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.
Lowland dominated by cottonwood, green ash, Rosa, Ribes, and Symphoricarpos. Phenology: fruiting.
Accession: (unaccessioned), Barcode: USFS0050160

Stream bottom, mixed grass and forbs. Phenology: flowering & fruiting.
with Elizabeth Mark

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Bosque de Oso Wildlfe Area, mine reclamation site, ca 0.5 mi S of Zamora.
Mixed grasses and forbs; highly disturbed. Phenology: flowering & fruiting.
with Elizabeth Mark

U.S.A., Montana, Phillips County: Upper 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.
Sandstone slot canyon. Phenology: flowering & fruiting.
with Joseph L. M. Charboneau

U.S.A., Montana, Phillips County: [location and coordinates withheld]
Lower slopes and bottom of a narrow coulee. Phenology: flowering & fruiting.

U.S.A., Montana, Phillips County: Assiniboine Creek, W of Assiniboine Road, ca 8 air mi WNW of the confluence of Assiniboine Creek with the Milk River, ca 10 air mi NNW of Malta.
Grassland valley. Phenology: flowering.
Joseph L. M. Charboneau, 1720. 7/15/2010.

U.S.A., Montana, Valley County: Bull Pasture Coulee and above, E of Windy Ridge Road, ca 1.5 air mi NE of Erie Reservoir, ca 17 air mi N of Hinsdale; ca 36.5 air mi NNW of Glasgow.
Coulee bottom with clay mud. Phenology: flowering & fruiting.
Joseph L. M. Charboneau, 2331a. 7/27/2010.

U.S.A., Montana, Valley County: Bitter Creek Wilderness Study Area: along Chisholm Creek, ca 8 air mi NNW of Newberry Flat Reservoir, ca 36 air mi NNE of Glasgow.
Muddy banks with shallow water. Phenology: flowering & fruiting.
Joseph L. M. Charboneau, 2426. 7/27/2010.

U.S.A., Montana, Valley County: Burnt Lodge Wilderness Study Area: Larb Hills (South): Plum Coulee on Plum Creek Trail, ca 3 air mi SSE of Castle Butte, ca 46 air mi SW of Glasgow.
Draw bottoms. Phenology: fruiting.
Joseph L. M. Charboneau, 2786. 8/3/2010.

U.S.A., Montana, Phillips County: N 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.
Moist ditch bottoms. Phenology: flowering & fruiting.

U.S.A., Montana, Phillips County: Charles M. Russell National Wildlife Refuge: end of Refuge Road 401, Sevenmile Creek and ridge to the E, ca 4 air mi SSE of Taint Reservoir, ca 20 air mi SSE of Zortman; ca 55 air mi SSW of Malta.
Creek bottom on clay soil. Phenology: fruiting.

U.S.A., Colorado, Pueblo County: Wet 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.
Roadside and grassland. Phenology: flowering & fruiting.
with Elizabeth Mark

U.S.A., Montana, Phillips County: Matador Ranch: Coburn Butte and prairie to the E, ca 8.5 air mi WSW of Veseth Reservoir, ca 8.5 air mi ESE of Zortman; ca 40 air mi SSW of Malta.
Coulee bottom snowberry thicket. Phenology: flowering & fruiting.

U.S.A., Montana, Phillips County: American Prairie Reserve: Parrot Coulee at confluence with Beaver Creek, ca 1.5 air mi SW of Veseth Reservoir, ca 16 air mi E of Zortman; ca 36 air mi SSW of Malta.
Silty flats above creek bed. Phenology: flowering.
with Damien Austin

U.S.A., Montana, Phillips County: Bowdoin National Wildlife Refuge: along Refuge Tour Road, near Black Coulee Pond, ca 6 air mi NW of Le Noir Reservoir, ca 3.5 air mi E of the Milk River, ca 7 air mi ENE of Malta.
Wetlands interspersed with groves of cottonwood and Russian olive and chokecherry-willow thickets. Phenology: flowering.

U.S.A., Montana, Valley County: Charles M. Russell National Wildlife Refuge: Cut Throat Coulee at terminus of Refuge Road 325, ca 4.5 air mi N of Bonetrail Boat Ramp, ca 44 air mi WSW of Fort Peck; ca 43 air mi SW of Glasgow.
Open coulee bottoms. Phenology: flowering & fruiting.

U.S.A., Montana, Valley County: Blanche 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.
Coulee bottom with snowberry-buffaloberry-willow thickets. Phenology: flowering & fruiting.

U.S.A., Montana, Valley County: Willow Creek near its confluence with Eagles Nest Coulee and ridge to the W, ca 7.5 air mi WNW of Newberry Flat Reservoir, ca 15 air mi NNE of Hinsdale; ca 32 air mi NW of Glasgow.
Steep wooded drainage in bluffs above creek on sandy soil. Phenology: flowering.

U.S.A., Montana, Phillips County: Milk River Dodson Dam Unit Wildlife Management Area: ca 3.5 air mi NW of Dodson; ca 21 air mi WNW of Malta.
Wetlands and thickets. Phenology: fruiting.

U.S.A., Montana, Phillips County: Charles 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.
Floodplain with some groves of willows and cottonwoods on silty soil. Phenology: fruiting.

U.S.A., Colorado, Pueblo County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: San Isabel National Forest: Colo Hwy 78, 5 air mi NE of San Isabel.
with Fengjie Sun

U.S.A., Colorado, Delta County: Gunnison Gorge National Conservation Area: West River Trail from trailhead on South River Road, near the confluence of the North Fork Gunnison River and the Gunnison River to the Gunnison Gorge Wilderness area, ca 6 air mi SW of Hotchkiss.
Lowland riparian in sparse/pinyon/juniper/rock. Phenology: flowering & fruiting.

U.S.A., Colorado, Delta County: Uncompahgre Plateau: Little Dominguez Canyon from Poison Canyon to the bend on the east side of Star Mesa, ca 16.5 air mi WNW of Delta.
Along creek in low elevation riparian area. Delta and Mesa County Phenology: fruiting.

U.S.A., Colorado, Montrose County: Uncompahgre Plateau: Roubideau Canyon; middle canyon just NW of Camel Back, ca 17 air mi NW of Montrose.
Along creek in low elevation riparian area. Phenology: flowering & fruiting.

U.S.A., Montana, Carter County: Custer National Forest: Long Pines: Iron Spring and vicinity and down stream, ca 18 air mi SE of Ekalaka.
Stream bottom. Phenology: flowering & fruiting.

U.S.A., Montana, Powder River County: Custer 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.
Lowland dominated by cottonwood, green ash, Rosa, Ribes, and Symphoricarpos. Phenology: fruiting.

U.S.A., Colorado, Fremont County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: Spring Gulch.
Streamside and slope. Phenology: flowering & fruiting.

U.S.A., Wyoming, Goshen County: Ca 4 mi NE of Lingle.
42° 10.2' N, 104° 17' W; unknown, , Specimen Label
Disturbed area, with Medicago and Calamovilfa. Phenology: flowering & fruiting.

U.S.A., Wyoming, Goshen County: Ca 4 mi NE of Lingle.
Edge of drainageway, with Symphyotrichum and Hordeum. Phenology: fruiting.

U.S.A., Montana, Madison County: Madison Valley: Eight Mile Ford Fishing Access site, ca 4 air mi S of Ennis, along County Road 36.
Disturbed ground around a berm. Phenology: flowering & fruiting.

U.S.A., Utah, Daggett County: Southwestern Wyoming and Adjacent Utah: Grasshopper Island in the Green River, ca 11 air mi E of Dutch John.
Shoreline. Phenology: flowering & fruiting.
with Duane Atwood and Lucy Jordan

U.S.A., Colorado, Mesa County: Uncompaghre Plateau: Unaweep Canyon, lower East Creek, ca 25 3/4 air mi NW of Delta.
Near creek in sandstone canyon. Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County: Ca 16 mi W of Wheatland.
42° 3.1' N, 105° 16.6' W; NAD 83, uncertainty .5 mi., Nat. Geog. TOPO!
Grassy hillside, with Nassella and Artemisia. Phenology: fruiting.

U.S.A., Wyoming, Platte County: Camp Guernsey: Spring Creek, ca 0.6 km NW of Haushar Ranch Historical Area.
zone DMC, 515700E, 4695150N; unknown, GPS reading
Gentle slope; intermittent stream; rocky loam; with Symphoricarpos occidentalis, Rosa sp., Poa pratensis, Pinus ponderosa, and Juniperus scopulorum. Scattered; ascending, fibrous rooted, perennial herb; 7-9 dm tall; leaf glaucous. Phenology: flowering & fruiting.
with Carlos A. Popolizio, Donald L. Hazlett

U.S.A., Wyoming, Platte County: Camp Guernsey: Warm Spring Canyon, ca 1.2 km S of U.S. Hwy 26 and ca 2.3 km SW of North Platte River.
zone DMC, 518200E, 4678000N; unknown, GPS reading
Level to gentle slope; riparian; gravelly sand; with Populus acuminata, Populus angustifolia, Eleocharis palustris, Veronica anagallis-aquatica, Juncus spp. Scattered; erect, perennial herb; 6-9 cm tall. Phenology: flowering & fruiting.
Carlos A. Popolizio, 960. 7/10/1996.
with Donald L. Hazlett, Melanie Arnett

U.S.A., Wyoming, Platte County: Camp Guernsey: Spring Creek, ca 0.6 km NW of Haushar Ranch Historical Area.
zone DMC, 515700E, 4695150N; unknown, GPS reading
Gentle slope; intermittent stream; rocky loam; with Symphoricarpos occidentalis, Rosa sp., Poa pratensis, Pinus ponderosa, and Juniperus scopulorum. Scattered; ascending, fibrous rooted, perennial herb; 6-7 dm tall. Phenology: flowering & fruiting.
with Carlos A. Popolizio, Donald L. Hazlett

U.S.A., Wyoming, Platte County: Camp Guernsey: western bank of North Platte River, ca 1.0 km SW of the city of Guernsey, ca 0.4 km NW of Lucindy Rollins Grave.
Level; riverine; sand; with Populus deltoides, Elaeagnus angustifolia, Symphoricarpos occidentalis, Phalaris arundinacea, Carex spp. Scattered; erect, fibrous rooted, perennial herb; 4-6 dm tall. Phenology: fruiting.
with Carlos A. Popolizio

U.S.A., Colorado, Fremont County: East-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: Parkdale Recreation Area off U.S. Hwy 50 along the south bank of the Arkansas River, ca 11.4 air mi WNW of Canon City.
Weedy, disturbed site along the river, with alluvial gravels and thin, poor soils. Phenology: flowering.

U.S.A., Colorado, Fremont County: East-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: along the north face of Little Crampton Mountain and W along Cottonwood Creek, ca 1.5 air mi W of Colo Hwy 9, ca 13.5 air mi WNW of Canon City.
On the banks of the creek. Phenology: flowering.

U.S.A., Wyoming, Natrona County: Upper North Platte and Laramie River Drainages: North Platte River near Fort Caspar, ca 0.5 air mi S of Mills townsite.
Willows, cottonwoods, and gravelly banks of river. Phenology: fruiting.

U.S.A., Colorado, Fremont County: East-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: along the N bank of the Arkansas River and adjacent uplands off County Road 45, ca 2 air mi NW of Howard.
Along the banks of the river and adjacent roadside. Phenology: flowering.

U.S.A., Colorado, Douglas County: East-central Colorado: Mosquito Range to Plains: Platte Canyon: along the South Platte River and adjacent canyons and ridges ca 4 air mi NE of town of South Platte.
In rocky-gravelly gulch bottom with Quercus gambelli and Toxicodendron rydbergii. Phenology: flowering.