Eriogonum arcuatum (2007)
POLYGONACEAE
Eriogonum arcuatum Greene
U.S.A., Colorado, Park County: Arapaho National Forest: Hoosier Ridge, 1.5 mi E of Colo Hwy 9, 8 mi S of Breckenridge.
Tree line-alpine habitats. Park/Summit Counties Phenology: flowering.
Accession: USFS 891928

Eriogonum arcuatum (1899)
POLYGONACEAE
Eriogonum arcuatum Greene
U.S.A., Colorado: Pagosa Springs.
Elev. 7100 ft.
Phenology: flowering.
Type Specimen: Isotype for Eriogonum arcuatum Greene. Pittonia 4: 319. 1901.
Annotations:
3. Eriogonum arcuatum Greene
Annotated by James L. Reveal in 1971. Isotype. =E. jamesii Benth. in DC. var. flavescens S. Wats.
2. Eriogonum jamesii Benth. var. flavescens S. Watson
Annotated by C. L. Porter.
1. Eriogonum arcuatum Greene sp. nov.
Annotated by Edward L. Greene.
Accession: RM 165641, Barcode: RM0003271

Eriogonum arcuatum (1899)
POLYGONACEAE
Eriogonum arcuatum Greene
U.S.A., Colorado: Pagosa Springs.
Elev. 7100 ft.
Phenology: flowering.
Type Specimen: Isotype for Eriogonum arcuatum Greene. Pittonia 4: 319. 1901.
Annotations:
3. Eriogonum arcuatum Greene
Annotated by James L. Reveal in 1971. Isotype. = E. jamesii Benth. in DC. var. flaescens S. Wats.
2. Eriogonum jamesii Benth. var. flavescens S. Watson
Annotated by C. L. Porter in 1966. '66 Verbatim Date.
1. Eriogonum arcuatum Greene sp. nov.
Annotated by Edward L. Greene.
Accession: RM 23137, Barcode: RM0003270

Eriogonum arcuatum var. arcuatum (2004)
Eriogonum arcuatum Greene var. arcuatum
U.S.A., Arizona, Coconino County: Kaibab National Forest: Kaibab Plateau: just E of Forest Road 225, ca 3 air mi ENE of Jacob Lake; ca 25 air mi SE of Fredonia.
Selectively logged ponderosa pine forest above canyons. Phenology: flowering.
Accession: RM (unaccessioned)

Eriogonum arcuatum var. arcuatum (2004)
Eriogonum arcuatum Greene var. arcuatum
U.S.A., Arizona, Coconino County: Coconino National Forest: Sterling Canyon from Vultee Arch to pass to E towards Manzanita Campground.
Elev. 6800 ft.
Ponderosa pine and Douglas fir forest with oak understory. Phenology: flowering.
Annotations:
1. Eriogonum arcuatum Greene var. arcuatum
Annotated by B. E. Nelson.
with James F. Fowler
Accession: RM (unaccessioned)

Eriogonum arcuatum var. arcuatum (2005)
Eriogonum arcuatum Greene var. arcuatum
U.S.A., Arizona, Coconino County: Kaibab National Forest: Kaibab Plateau: along Ariz Hwy 67 at Crane Lake, ca 13 air mi SSE of Jacob Lake; ca 35.5 air mi SE of Fredonia.
Dry meadow. Phenology: flowering & fruiting.
with James F. Fowler
Accession: RM (unaccessioned)

U.S.A., Arizona, Coconino County: Kaibab National Forest: Coconino Plateau: Coconino Rim off Coconino Rim or Forest Road 310, ca 5.5 air mi S of South Rim Grand Canyon, ca 12.5 air mi ESE of Tusayan; ca 53 air mi NNW of Flagstaff.
Canyon going off rim of plateau. Phenology: flowering.
with James F. Fowler

U.S.A., Arizona, Coconino County: Kaibab National Forest: Coconino Plateau: off Coconino Rim or Forest Road 310 ca 1.5 air mi S of Coconino Rim just E of Woodbridge Tank, ca 20 air mi ESE of Tusayan; ca 48 air mi N of Flagstaff.
Sandy ponderosa pine forest with pinyon, juniper, and oak, with shallow wash. Phenology: flowering.

U.S.A., Colorado, Mineral County: Eastern San Juan Mountains: Rio Grande National Forest: Colo Hwy 149; ca 13 air mi SW of Creede.
Spruce forest with scattered aspen in open xeric heavily grazed grassland, pond, spruce forest with scattered aspen, rocky outcrop, subalpine bristle cone forest, creek, roadside; open xeric grassland. Phenology: flowering.

U.S.A., Colorado, Mineral County: Eastern San Juan Mountains: Rio Grande National Forest: Colo Hwy 149 to Forest Road 600 then 4 road mi; ca 6 air mi SE from Creede.
Rocky outcrops. Phenology: flowering.

U.S.A., Colorado, Mineral County: Eastern San Juan Mountains: Rio Grande National Forest: Colo Hwy 149 W of Creede to Forest Road 507, 1.5 air mi on Forest Road 507 to Forest Road 508 then 0.6 road mi.
Grassy slopes of hill with scattered shrubs, Douglas fir-aspen slope, and disturbed areas due to mining activity; grassy slopes. Phenology: flowering.
1. Eriogonum arcuatum Greene var. arcuatum
Annotated by Jeanette Flaig.
with Jeanette Flaig

U.S.A., Colorado, Mineral County: Eastern San Juan Mountains: Rio Grande National Forest: Bachelor Loop, S of Bulldog Mountain, 4.5 mi NW of Creede.
Mixed grass prairie foothills. Phenology: flowering.
with Kurt Flaig

U.S.A., Arizona, Yavapai County: Prescott National Forest: Woodchute Trailhead to south end of Woodchute Wilderness.
Parking lot and along trail and oak thickets. Phenology: flowering.
1. Eriogonum arcuatum Greene var. arcuatum
Annotated by James F. Fowler.

U.S.A., Colorado, Gunnison County: Northern Gunnison Basin: ca 4.5 air mi ESE of Parlin.
Granite outcrops; sagebrush. Phenology: flowering.
Accession: 777546

U.S.A., Colorado, Gunnison County: Northern Gunnison Basin: ca 1 1/4 air mi ENE of Parlin.
Sagebrush hills. Phenology: flowering.
Accession: 777545

U.S.A., Colorado, Mesa County: [location and coordinates withheld]
Dry creek bed and canyon bottom with pinyon, juniper, and single leaf ash. Phenology: flowering & fruiting.
with Laura Cosse
Accession: (unaccessioned)

U.S.A., Wyoming, Albany County: 4 miles SE of Laramie.
41.2904° N, 105.5211° W; NAD 83, uncertainty 1 mi., Digital Map
Dry hillside. Phenology: flowering.
Annotated by James L. Reveal in 2003.
Accession: RM 194927, Barcode: RM0221779

U.S.A., New Mexico, Sandoval County: Santa Fe National Forest and Vicinity: on the west side of the south end of Mesa de Cuba, ca 3/4 mi N of the head of Arroyo Chijuillito, ca 4 air mi SW of Cuba.
Steep slopes below sandstone cliffs with scattered ponderosa pine, pinyon, and juniper. Phenology: flowering.
with Jill Larson

U.S.A., Wyoming, Sweetwater County: Cooper Ridge: 25 mi E of Rock Springs along Wyo Hwy 430.
Sagebrush/juniper/mahogany community. Phenology: flowering & fruiting.

U.S.A., Wyoming, Laramie County: Laramie Range: north side of South Branch Crow Creek, ca 0.3 mi E of Wyo Hwy 210 (Happy Jack Road); ca 2.2 mi SW of Upper North Crow Reservoir.
Artemisia tripartita var. rupicola grassland community on dry, humus-gravel soil bordering gravel road; with Koeleria macrantha, Elymus trachycaulus, and Bromus tectorum.
Accession: RM 615923

U.S.A., Wyoming, Albany County: Laramie Range: ca 0.5 mi NE of Hermosa Siding (along UPRR), along County Road 222 ca 2 mi NE of Tie Siding.
Artemisia tripartita-Muhlenbergia filiculmis community on rolling plains of coarse, pink Sherman granite with scattered granite boulders and outcrops.
Annotated by James L. Reveal in 2003.

U.S.A., Wyoming, Albany County: Laramie Range: east side of Forest Road 700 ca 0.5 mi SW of junction with Wyo Hwy 210 (Happy Jack Road), ca 1.2 mi W of Laramie County and ca 0.9 mi N of the main stem of Middle Crow Creek.
Artemisia tripartita var. rupicola grassland on Sherman Granite-gravel sloping plains with shallow soil. With Eriogonum umbellatum and E. flavum. Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County: Laramie Range: Schoolhouse Creek valley, ca 2 mi E of Roger Canyon, ca 7.5 air mi NE of Laramie.
Artemisia tripartita var. rupicola/Koeleria macrantha community on south-dipping gentle slopes of gravelly brown clay-loam. Phenology: flowering.
Annotated by James L. Reveal in 2003.

U.S.A., Arizona, Coconino County: Kaibab National Forest: East Game road: Pleasant Valley Canyon.
T36N R3E S4
Phenology: flowering.
with M. J. Pettit
Accession: RMRS 601

U.S.A., Arizona, Coconino County: Kaibab National Forest; Pleasant Valley Canyon; eastside Game Road.
T36N R3E S30
Accession: RMRS 602

U.S.A., Arizona, Yavapai County: Prescott National Forest; Cottonwood.
Accession: RMRS 603

U.S.A., Arizona, Coconino County: Kaibab National Forest: South VT Park.

U.S.A., Wyoming, Albany County: Laramie Range: ca 33 air mi NE of Rock River.
Creekside. Phenology: flowering.
with J. Brondum and T. McGowan
Accession: (unaccessioned)

U.S.A., Wyoming, Albany County: Laramie Range: Laramie Peak Wildlife Habitat Management Area: along Ashley Creek, ca 32 air mi NE of Rock River.
Granite outcrops. Phenology: flowering.
with J. Brondum and T. McGowan
Accession: (unaccessioned)

U.S.A., Wyoming, Albany County: Laramie Range: ca 25 air mi NE of Laramie.
Sagebrush grassland, granite outcrop. Phenology: flowering.
with J. Brondum and T. McGowan

U.S.A., Wyoming, Albany County: Laramie Range: Johnson Reservoir, ca 27 air mi NE of Laramie.
Granite outcrop. Phenology: flowering.

U.S.A., Colorado, Larimer County: 1.2 mi N of Cherokee Park Road, 0.1 mi SW of large meander of North Fork Cache La Poudre River.
Diminant Ponderosa pine habitat, scattered Sabina scopulorum, Stipa comata, Muhlenbergia and Aletes humilis. Phenology: buds.
Accession: RM 540736

U.S.A., Colorado, No county County: Cochetopa National Forest: Klein Ranch.
On a gentle north-facing slope in gravelly loam soil of grassland. Wide distribution. Phenology: flowering & fruiting.
Accession: USFS 449424

U.S.A., New Mexico, Sandoval County: Old State 44, 18 mi S of Cuba.
In Pinyon-juniper habitat; scattered on dry sandy clay soils. Phenology: flowering.
1.
Annotated by Charles Feddema in 2003.
Accession: RM 345844

U.S.A., Colorado, Costilla County: 3 mi W of San Acacio.
Hills. Phenology: flowering & fruiting.
1.
Annotated by C. L. Porter in 2003.

U.S.A., Colorado, Larimer County: Cherokee Park, near the Wyo-Colo State line.
with George G. Hedgcock

U.S.A., Colorado, Jackson County: 12 mi down W side of Cameron Pass.

U.S.A., Colorado, Montrose County: Bostwick Park, east of Montrose.
Dry hills. Phenology: flowering.
1.
Annotated by C. L. Porter in 2003.

U.S.A., Colorado, El Paso County: Minnehaha.
Elev. 2600 m.
Matta endemica, Nebr-Kan-Ariz-Col-Mon-Alb., species principalis aspectus autumnalis Pseudocymopterus-Mentzelia-chalicodio. Phenology: flowering & fruiting.
Annotated by C. L. Porter in 2003.
with E. S. Clements

Eriogonum arcuatum var. arcuatum ()
U.S.A., Colorado, El Paso County: Artist's Glen.
Elev. 2550 m.
This is a photograph. Phenology: flowering.
F. E. Clements, s.n.. //.
with E. S. Clements

U.S.A., Colorado, Boulder County: Gregory Canyon: near Boulder.
Dry soil. Phenology: flowering & fruiting.

U.S.A., Colorado, Boulder County: Crescent, CO.

U.S.A., Colorado, Boulder County: Between Sunshine and Ward.

U.S.A., Colorado, Boulder County: Near Boulder.
Plains and foothills. Phenology: flowering & fruiting.

U.S.A., Colorado, Mesa County: Fossil Creek, CO.
Phenology: flowering & fruiting.

U.S.A., Colorado, Larimer County: Rattle Snake Park.
Phenology: flowering & fruiting.

U.S.A., Colorado, Larimer County: Horsetooth Mountain.

U.S.A., Colorado, Larimer County: Dale Creek

U.S.A., Colorado, Larimer County: Horsetooth.
Phenology: flowering & fruiting.
George E. Osterhout, 815. 7/16/1895.

U.S.A., Wyoming, Albany County: [location and coordinates withheld]
Granite outcrops. Phenology: flowering & fruiting.

U.S.A., Colorado, Boulder County: Camp on Little South.
Annotated by B. E. Nelson in 2003.
George E. Osterhout, s.n.. 8/15/1912.

U.S.A., Colorado, Boulder County: Estes Park
George E. Osterhout, s.n.. 8//1895.

Eriogonum arcuatum var. arcuatum ()
U.S.A., Colorado, No county County:
Alpine and subalpine. Phenology: flowering & fruiting.
with Harbour

U.S.A., Wyoming, Albany County: Laramie Range: ca 21.5 air mi SE of Laramie; 3/4 mi N of Colorado on U.S. Hwy 287; 1/2 - 3/4 mi W of U.S. Hwy 287.
Gravelly soil on grasslands. Phenology: flowering.

U.S.A., Colorado, El Paso County: Pikes Peak Region.
On granite slides. Phenology: flowering & fruiting.

U.S.A., Colorado, Larimer County: Moon's Ranch.
Phenology: buds.
New York Botanical Garden, 3911. 7/1/1894.

U.S.A., Colorado, Mesa County: Uncompaghre National Forest: Britt Point.
Woodland, in sandy loam soil of a 5-10% east-facing slope growing with P H Artr Bogr CHR. Current condition of range, poor. Phenology: flowering.
Annotated by Charles Feddema in 2003.
Accession: USFS 449599

U.S.A., Colorado, Mesa County: Uncompahgre Plateau: 25 mi SW of Whitwater.

U.S.A., Colorado, Montrose County: Iron Creek, 10 mi S of Crawford.
Forming mats 6" to 1' across on sandstone rocks. Phenology: flowering & fruiting.

U.S.A., Colorado, Park County: Pike National Forest: Lake George.
In fresh soil of grass area. Phenology: flowering.

U.S.A., Colorado, Boulder County: Lyons, CO, near Estes Park.
Dry, rocky hillsides in a yellow pint belt. Phenology: flowering.
Annotated by S. F. Glassman in 2003.

U.S.A., Colorado, Larimer County: Eastern foothills of Colorado Front Range: adjacent to KOA Campground and U.S. Hwy 287, ca 12 air mi N of Fort Collins.
Open canopy blue gramma/needle-and-thread shortgrass grassland and slopes. Phenology: flowering.

U.S.A., Colorado, Park County: South Park, in depression along west side of highway, W of Lake Antero.
Elev. 2900 m.
In depression along west side of highway. Phenology: flowering.
with R. C. Wittmann

U.S.A., Wyoming, Albany County: [location and coordinates withheld]
Rocky threetip sagebrush slopes and flats. Phenology: flowering & fruiting.
Annotated by B. A. Packer.

U.S.A., Wyoming, Albany County: Laramie Range: Wallace Draw area, ca 7.5 air mi SE of Garrett.
Grassland. Phenology: flowering.
Annotated by B. A. Packer.

U.S.A., Arizona, Coconino County: Kaibab National Forest: Jacob Lake Ranger Station.
T38N R2E S7
South slope; gravelly loam with pine. Phenology: flowering.
Clarence F. Korstian, 134. 8/11/1917.
with F. S. Baker

U.S.A., Arizona, Coconino County: Kaibab National Forest: V. T. Park.
2% west slope; deep clay loam in meadow with Aster, dandilion, clover, bluegrass. Phenology: buds.
Annotated by James L Reveal in 2003.

U.S.A., Arizona, Coconino County: Grand Canyon: south rim.
Annotated by James L Reveal in 2003.

U.S.A., Arizona, Coconino County: Kaibab National Forest: V. T. Park.
Annotated by James L Reveal in 2003.
with C. L. Hitchcock

U.S.A., Arizona, Coconino County: Kaibab National Forest: South VT Park.
Level solope; deep gravelly sand. Phenology: flowering.

U.S.A., Arizona, Mohave County: Hualapai Mountains: Hualapai Mountain Road, Sawmill Canyon.
T20N R15W S20
Rock outcrop on southwest facing slope; chaparral with Quercus, Rhus, and Rhamnus. Phenology: flowering.

U.S.A., Arizona, Coconino County: 10 mi N of Jacob Lake along Hwy Alt 89.
Pinyon-juniper community; Kaibab limestone formation. Phenology: flowering.
with Judy Atwood

U.S.A., Wyoming, Albany County: Laramie Range: Sherman, ca 14.5 air mi SE of Laramie.
Along railroad tracks; and in granite outcroppings and sagebrush grassland. Phenology: flowering.

U.S.A., Arizona, Coconino County: Coconino National Forest: Kaibab Plateau: Demotte Park, along Hwy 67 to the north rim of the Grand Canyon at its junction with Forest Road 422 to east rim viewpoint.
Subalpine meadow on west facing slope below forest of Populus tremuloides and Picea engelmannii. Phenology: flowering.
with Glenn Bilodeau and Daniel Lebedyk

U.S.A., Wyoming, Laramie County: Laramie Range: Granite Reservoir: ca 15 air mi E of Laramie.
Southwest facing granite outcrops. Phenology: flowering.

U.S.A., Arizona, no county County: Coconino National Forest.
Grazing Reconnaissance Phenology: flowering.
Annotated by Walter Fertig in 2015.
3. Eriogonum fusiforme Small
Annotated by Ivar Tidestrom in 2003.
William R. Chapline, 253. 8/31/1911.

U.S.A., Wyoming, Albany County: Laramie Range: Medicine Bow National Forest: along the Middle Branch Middle Lodgepole Creek, ca 11 air mi ESE of Laramie.
Sagebrush grassland with granite outcroppings. Phenology: flowering.
with T. McGowan & J. Brondum

U.S.A., Wyoming, Albany County: Laramie Range: off of U.S. Hwy 287, ca 15 air mi SE of Laramie.
Sagebrush grassland. Phenology: flowering & fruiting.
with T. McGowan

U.S.A., Wyoming, Albany County: Laramie Range: Roger Canyon Road, ca 10 air mi NE of Laramie.
Grassland. Phenology: flowering.
with T. McGowan & J. Brondum

U.S.A., Wyoming, Albany County: Laramie Range: off of Monument Road (County Road 231), ca 16 air mi SE of Laramie.
Sagebrush grassland. Phenology: flowering & fruiting.
with T. McGowan & J. Brondum

U.S.A., Wyoming, Albany County: Laramie Range: ca 10 air mi SE of Laramie.
Sagebrush grassland with granite outcroppings. Phenology: flowering.

U.S.A., Wyoming, Albany County: Medicine Bow Mountains: 2.5 mi NW of Centennial on WY Hwy 130: 1/4 mi NW of Libby Creek.
with Linda Nelson

U.S.A., Wyoming, Albany County: Laramie Plains: Wyo Hwy 230, at mile post 24.5.
Roadside; gravelly-sandy soil. Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County: Laramie Plains: U.S. Hwy 287, 0.2 mi S of Tie Siding.
Common on roadside. Phenology: flowering.

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.
Grassy bottom of a swale through rolling plains. Phenology: flowering.

U.S.A., Wyoming, Laramie County: Laramie Range: north side of South Branch Crow Creek, ca 0.3 mi E of Wyo Hwy 210 (Happy Jack Road); ca 2.2 mi SW of Upper North Crow Reservoir.
Artemisia tripartita var. rupicola grassland community on dry, humus-gravel soil bordering gravel road; with Koeleria macrantha, Elymus trachycaulus, and Bromus tectorum.

U.S.A., Wyoming, Platte County: Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Wyo Hwy 34, ca 4 air mi E of Albany County.
Sandy plains with short-grass prairie. Phenology: flowering.

U.S.A., Wyoming, Laramie County: [location and coordinates withheld]
Limestone outcrops with mountain mahogany juxtaposed with degrading granites. Phenology: flowering.

U.S.A., Wyoming, Albany County: Medicine Bow Mountains: ridge between Eagle and Beaver creeks above the Laramie River, ca 6 air mi SSW of Woods Landing; ca 31 air mi SW of Laramie.
Steep, rocky, gravelly slopes and flats with sagebrush and bitterbrush. Phenology: flowering.

U.S.A., Wyoming, Albany County: Laramie Plains: right-of-way along west side of U.S. Hwy 287 and Grant Creek, ca 1.5 air mi SE of Tie Siding; ca 18 air mi S of Laramie.
Plains in right-of-way. Phenology: flowering.

U.S.A., Colorado, Saguache County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Cochetopa Hills: County Road 46AA, 4 air mi NNW of Saguache near Cottonwood Spring.
Grassland and rock outcrops. Phenology: flowering.

U.S.A., Wyoming, Albany County: Dipping Vat Creek, off Wheatland Tunnel Road.
T23N R72W S24
On granite hill. Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County: Sheep Mountain.
41.2828° N, 106.0647° W; NAD 83, uncertainty 0.5 mi., Digital Map
Sandy hillsides. Phenology: flowering.

U.S.A., Wyoming, Albany County: Rock River.
Moister grassy draws of the bench. Ecological Survey of Vegetativ Succession Under Irrigation. Phenology: flowering & fruiting.
J. Francis Macbride, 2789. 7/5/1914.

U.S.A., Wyoming, Albany County: Laramie Hills.

U.S.A., Wyoming, Albany County: Laramie.
Dry soil. Phenology: flowering & fruiting.

U.S.A., Wyoming, Laramie County: Laramie Range: south side of Granite Springs Reservoir, SE of Middle Fork Crow Creek; ca 1.4 mi S of Wyo Hwy 210 (Happy Jack Road).
Gravelly slopes of pink Sherman Granite at edge of grove of Pinus ponderosa among boulders. Phenology: flowering.

U.S.A., Wyoming, Laramie County:
Open ponderosa pine with Potentilla and Harbouria. Flower yellow. Phenology: flowering.

U.S.A., Wyoming, Albany County: South Sybille.
On the stony open slopes. Phenology: flowering.

U.S.A., Wyoming, Albany County: Halleck Canyon.
Open dry ground. Phenology: flowering.

U.S.A., Wyoming, Albany County: Laramie Range: ca 3 mi E of summit on U.S. Hwy 30.
Rolling prairie. Phenology: flowering.

U.S.A., Wyoming, Albany County: Laramie.
Aven Nelson, s.n.. //1890.

U.S.A., Wyoming, Albany County: Laramie Plains, Steamboat Lake.

U.S.A., Wyoming, Albany County: 10 mi S of Woods Landing, Boswell Creek Road, above Johnson Creek.
Among rocks with Muhlenbergia filiculmis. Common. Phenology: flowering.
with Ronald L. Hartman

U.S.A., Wyoming, Albany County: West Foothills of the Laramie Range: north-south trending ridge, ca 1.5 mi S of Government Gulch, ca 2 1/4 air mi E of Simpson Springs, ca 6.5 air mi SE of Laramie.
Cushion plant community on limestone gravel and exposed bedrock, with Eriogonum flavum, E. umbellatum. Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County: Laramie Range: adjacent to County Road 241, ca 3 air mi E of U.S. Hwy 287, ca 0.5 mi S of Dale Creek, ca 18 mi SSE of Laramie.
Artemisia tripartita-Muhlenbergia filiculmis community on pink Sherman gravel and quartzite slopes and plains. Phenology: flowering.

U.S.A., Wyoming, Albany County: Laramie Range: plains SW of Eagle Rock along gravel road on north side of Middle Branch Middle Lodgepole Creek, ca 11 air mi E of Laramie.
Artemisia tripartita-Muhlenbergia grassland community on pinkish gravelly Sherman granite plains; with Eriogonum umbellatum var. umbellatum. Phenology: flowering.
with Jane Struttmann

U.S.A., Wyoming, Albany County: Near Tie Siding.

U.S.A., Wyoming, Albany County: Sherman.
Sunny disintegrated granite hills. Phenology: flowering.

U.S.A., Wyoming, Albany County: Laramie Peak.
Annotated by Aven Nelson in 2003.

U.S.A., Wyoming, Albany County: Laramie.
Open rock slopes. Phenology: flowering.

U.S.A., Wyoming, Albany County: W of Laramie River along road to North Park from Tie Siding.
Top of hill. Phenology: flowering.

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

U.S.A., Wyoming, Albany County: Head of Pole Creek.

U.S.A., Wyoming, Laramie County: Laramie Mountains: ca 22.5 air mi W of Cheyenne; ca 3.5 air mi NE of Buford.
Shortgrass and open ponderosa pine forest communities with several small streams. Phenology: flowering.

U.S.A., Wyoming, Albany County: Medicine Bow National Forest: Middle Crow Creek, ca 12 mi E of Laramie.
T14N R71W S13; also S15
Along creek and adjacent slopes; on upper slopes with Erigeron, Sedum, Artemisia. Common; flowers yellow. Phenology: flowering.
Accession: USFS 403655, Barcode: USFS0069123

U.S.A., Wyoming, Albany County: Sheep Mountain: near Hecht Creek.
T14N R77W S4
Rocky and gravelly western exposures. Phenology: flowering.
Accession: USFS 403657, Barcode: USFS0069124

U.S.A., Wyoming, Albany County: West Foothills of the Laramie Range: north-south trending ridge, ca 1.5 mi S of Government Gulch, ca 2 1/4 air mi E of Simpson Springs, ca 6.5 air mi SE of Laramie.
Cushion plant community on limestone gravel and exposed bedrocked. Phenology: flowering & fruiting.

U.S.A., Wyoming, Albany County: Near Laramie River.

U.S.A., Wyoming, Laramie County: Laramie Range: northwest bank of Crystal Lake Reservoir and adjacent banks of Crow Creek N of reservoir, ca 2 air mi S of Wyo Hwy 210 (Happy Jack Road); ca 1 3/4 air mi W of Hecla.
Steep, east-facing slopes of pink Sherman Granite in Bouteloua gracilis-Yucca glauca community; in openings of Cercocarpus. Phenology: flowering.
with Jane Struttmann

U.S.A., Wyoming, Albany County: Laramie Range: Middle Lodgepole Creek, ca 2.5 air mi E of Eagle Rock, ca 3 mi NW of Upper North Crow Reservoir.
Gravelly, south-facing slope of Sherman granite above wetland; sagebrush grassland community of Artemisia frigida, A. tridentata, with Eriogonum flavum. Phenology: flowering.
with Jane Struttmann

U.S.A., Wyoming, Albany County: Between Tie Siding and Laramie.
George E. Osterhout, 6694. 8/7/1926.

U.S.A., Wyoming, Albany County: Laramie Range: junction of Vedauwoo Road (Forest Road 700) and Wyo Hwy 210, ca 1 mi W of Laramie County, ca 1 mi N of Middle Crow Creek.
West-facing rolling hillside of Sherman Granite gravel dominated by Artemisia tripartita, Carex oreocharis, and Muhlenbergia filiculmis. Phenology: flowering.

U.S.A., Wyoming, Albany County: Laramie Range: adjacent to Roger Canyon Road, ca 17 road mi E of Laramie on north side of Horse Mountain, ca 1.4 mi S of Horse Creek.
Dry, gravelly granite soil in Artemisia frigida-A. tripartita-Muhlenbergia filiculmis grassland on rolling terrain. Phenology: flowering.

U.S.A., Wyoming, Albany County: Laramie Range: ca 1.1 mi W of Turtle Rock, on plains N of Vedauwoo Road, ca 0.1 mi E of I-80.
Gravelly Sherman Granite slopes and rolling plains in community of Artemisia tripartita var. rupicola and Muhlenbergia filiculmis. Phenology: flowering.

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

U.S.A., Wyoming, Laramie County: 7 mi W of Cheyenne; 1 mi N of U.S. Hwy 30.
Shortgrass prairie. Phenology: flowering.

U.S.A., Wyoming, Albany County: Cummins.
T13N R77W S34; also S35

U.S.A., Wyoming, Carbon County: Foote Creek.
Charles R. Clarke, 61. 8/8/1975.

U.S.A., Wyoming, Carbon County: Arlington snow fence, 200 yds S of I-80 at mile post 271.3.
Grassland. Phenology: flowering.
Accession: USFS 636319, Barcode: USFS0069125

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.

Eriogonum arcuatum var. xanthum (1996)
Eriogonum arcuatum Greene var. xanthum (Small) Reveal
U.S.A., Colorado, Park County: East-central Colorado: Mosquito Range to Plains: Mosquito Range: Weston Peak: on S flank off Weston Pass or County Road 22, ca 11.5 air mi SW of Fairplay.
Among tumbled boulders at bottom of talus slope and moraines. Phenology: flowering.

Eriogonum arcuatum var. xanthum (1996)
Eriogonum arcuatum Greene var. xanthum (Small) Reveal
U.S.A., Colorado, Park County: East-central Colorado: Mosquito Range to Plains: Continental Divide: Hoosier Ridge: along the ridge N from Hoosier Pass ca 4 trail mi to an unnamed peak, ca 5.4 air mi NNE of Alma.
On sandy, west-facing alpine slopes. Phenology: flowering.

Eriogonum arcuatum var. xanthum (2003)
Eriogonum arcuatum Greene var. xanthum (Small) Reveal
U.S.A., Colorado, Clear Creek County: Arapaho National Forest: Front Range: Grays Peak Trail, ca 6.5 air mi SW of Georgetown; ca 4.5-5 air mi E of Loveland Pass.
Along trail and streams in alpine and subalpine. Phenology: flowering.

U.S.A., Colorado, Clear Creek County: Arapaho National Forest: Front Range: Mount Evans, off Colo Hwy 5, ca 0.5 mi NW of Lincoln Lake, ca 9.5 air mi SW of Idaho Springs.
Dry alpine slope. Phenology: flowering.

U.S.A., Colorado, Grand County: Arapaho National Forest: Front Range Colorado Mines Peak and peak just E before Mount Flora, ca 1-1.5 mi E of Berthoud Pass; ca 5 air mi SSE of Winter Park.
Alpine. Phenology: flowering.

U.S.A., Colorado, Clear Creek County: Arapaho National Forest: Front Range: Bard Creek to Engelmann Peak, ca 5 air mi NW of Georgetown and 4.5 air mi WSW of Empire.
South-facing ridge/slope at subalpine. Phenology: flowering.

U.S.A., Colorado, Clear Creek County: Arapaho National Forest: Front Range: Watrous Gulch and Mount Parnassus, ca 4.5 air mi NE of Loveland Pass and ca 6.5 air mi SW of Berthoud Pass.
Steep rocky alpine slope. Phenology: flowering.

U.S.A., Colorado, Chaffee County: Central Colorado: Sawatch Range, East Slope Continental Divide: trail up Mount Columbia, ca 13 air mi NW of Buena Vista.
Alpine scree and alpine meadow, west aspect. Phenology: flowering.

U.S.A., Colorado, Chaffee County: Central Colorado: Sawatch Range, East Slope Continental Divide: Mount Princeton summit and neighboring unnamed 13,000 ft peak, ca 8 air mi W of Nathrop.
Above treeline in rock scree and alpine turf. Phenology: flowering.
with Benjamin Madsen

U.S.A., Colorado, Chaffee County: Central Colorado: Sawatch Range, East Slope Continental Divide: Tabeguache Peak summit, ca 7 air mi NNE of Garfield.
Alpine meadow and scree above treeline. Phenology: flowering.

U.S.A., Colorado, Chaffee County: Central Colorado: Sawatch Range, East Slope Continental Divide: Hope Pass area, off Colorado Trail, Trail 1776, ca 3 air mi NW of Vicksburg.
Treeline with Picea engelmannii. Phenology: flowering.

U.S.A., Colorado, Chaffee County: Central Colorado: Sawatch Range, East Slope Continental Divide: off Trail 1436--Poplar Gulch Trail, ca 2 air mi N of St. Elmo.
Treeline with bristlecone pine and above (alpine meadow), southwest aspect. Phenology: flowering.

U.S.A., Colorado, Chaffee County: Central Colorado: Sawatch Range, East Slope Continental Divide: along Mt. Harvard Trail up east ridge from saddle up to summit, ca 14 air mi NW of Buena Vista.
Alpine and subalpine turf-meadow. Phenology: flowering.
with Tim Assal

U.S.A., Colorado, Chaffee County: Central Colorado: Sawatch Range, East Slope Continental Divide: along Forest Road 278 (Mt. Antero Trail) from treeline to summit of Mt. Antero, ca 4 air mi SE of Alpine.
Talus slope and alpine meadow. Phenology: flowering.
with Benjamin Madsen

U.S.A., Colorado, Larimer County: Roosevelt National Forest: Medicine Bow Mountains: Rawah Wilderness: Grassy Pass in the Rawah Lakes area, off Rawah Trail from Laramie River Road (County Road 103), ca 44 air mi WNW of Fort Collins.
Alpine pass, slopes and ridges with granite substrate with Geum and Mertensia. Phenology: flowering.

U.S.A., Colorado, Larimer County: Roosevelt National Forest: Medicine Bow Mountains: Rawah Wilderness: Clark Peak from Ruby Jewel Trailhead, ca 21 air mi SE of Walden. C
East facing alpine slopes and ridges with Geum and granite boulder piles. Phenology: flowering.

U.S.A., Colorado, Larimer County: Roosevelt National Forest: Medicine Bow Mountains: Rawah Wilderness: South Rawah Peak from West Branch Trailhead off Laramie River Road (County Road 103), ca 41 air mi W of Fort Collins.
East facing granite alpine slopes and summit with Geum. Phenology: flowering.

U.S.A., Colorado, Clear Creek County: Front Range: Arapaho National Forest: on Mt. Goliath [Goliath Peak].
T5S R73W S5
Occasional in Pinus aristata forest on a steep slope.
Accession: 610412

U.S.A., Colorado, Jackson County: Medicine Bow Mountains: Colorado State Forest: American Lakes area, S of Colo Hwy 14, ca 27 air mi SE of Walden.
South facing alpine ridges and slopes around and above the lakes with Geum and Sibbaldia. Phenology: flowering.

U.S.A., Colorado, Mineral County: Rio Grande National Forest: near Wagon Wheel Gap.
On a SE-facing slope in dry sandy soil with sage, painted cup, flax, daisies and grasses. Phenology: flowering.

U.S.A., Colorado, Park County: Mosquito Range: 0.75 mi SE of Mt. Bross, S of Dolly Varden Gulch and north of jeep trail.
T8S R78W S27; also S2
On an east-facing slope dominated by Willow, Kobresia and grasses; site bissected by old mines and roads. Phenology: flowering.

U.S.A., Colorado, Park County: Mosquito Range: Sheep Mountain: ca 1 mi SW of Horseshoe site.
T10S R78W S9 E1/2; and also W1/2 S1
Leadville limestone, loose talus; dominated by Dryas and shrubby cinquefoil. Phenology: flowering.

U.S.A., Colorado, No county County: Central Colorado.
Earl L. Johnston, 474. //1907.

U.S.A., Colorado, Boulder/Larimer County: Longs Peak
At timberline. Phenology: flowering.

U.S.A., Colorado, Chaffee County: San Isabel National Forest: Sawatch Range: Taylor Mountain, ca 4 mi N of Garfield.
Dry meadow on east-facing slope. Phenology: flowering.
with Mary Lou Rottman #2102

U.S.A., Colorado, Larimer County: Mount Cameron.

U.S.A., Colorado, Boulder/Larimer County: Longs Peak
Annotated by B. E. Nelson in 2003.

U.S.A., Colorado, Clear Creek County: Berthoud Pass.
Dry hills. Phenology: flowering.

U.S.A., Colorado, Clear Creek County: Mt. Evans Highway.
Steep rocky slope at timberline. Phenology: flowering.

U.S.A., Colorado, Park County: 0.8 mi E of U.S. Hwy 285, this turnoff being 2.5 mi N of the junction of U.S. Hwy 24 at Antero Junction and southwest of Antero Reservoir, associated with Artemisia.
On a low clay outcrop at the south base of a forested ridge. Phenology: flowering.
with C. Rose Broome

Eriogonum arcuatum var. xanthum ()
U.S.A., Colorado, El Paso County: Pikes Peak.
Canadian zone. Phenology: flowering.
with N. T. Schedin

U.S.A., Colorado, Clear Creek County: Along Hwy 103 W of its confluence with Colo Hwy #5.
with L. C. Higgins

U.S.A., Colorado, Larimer County: Roosevelt National Forest: West Branch Lakes.
On a 5% east-facing slope in shallow rocky soil of alpine area on ridge top. Distributed in alpine bogs. Phenology: flowering.
Annotated by Doris W. Hayes in 2003.

U.S.A., Colorado, Jackson County: Park Range: Routt National Forest: Mount Zirkel Wilderness Area: Ute Pass and vicinity.

U.S.A., Colorado, Boulder/Larimer County: Long Peak
Boulder field. Phenology: flowering.
with Ed Andrews

U.S.A., Colorado, Park County: Mount Bross, 0.15 mi SSE of Dolly Varden Mine.
Scattered on slope with Potentilla, Claytonia, Ipomopsis, Crepis and Physaria. Phenology: flowering.

U.S.A., Colorado, Alamosa County: Rio Grande National Forest: Sangre de Cristo Range, head of Raspberry Canyon, 2 mi N of California Peak.
Alpine and subalpine grassland. Phenology: flowering.

U.S.A., Colorado, Clear Creek County: Pike National Forest: ca 2 mi W of Guanella Pass; SW of Square Top Lakes.
T5S R75W S25
Steep slopes of dry tundra turf. Phenology: flowering.

U.S.A., Colorado, Boulder/Larimer County: Longs Peak
Rocks. Phenology: flowering.
Annotated by Aven Nelson in 2003.

U.S.A., New Mexico, Taos County: Vermejo Park Ranch: Culebra Range: in talus bowl on southwest side of upper Casias Lake, 1.8 air mi S of Big Costilla Peak.
Steep, northeast-facing, rocky alpine slope with Aquilegia coerulea, Trifolium attenuatum, Luzula arcuata, Penstemon whippleanus. Tepals lemon-yellow, pubescent on outer surface; stamens exserted; stems forming dense rounded mats, clothed with old leaves; frequent in scree and rock slopes. Photographed. Phenology: flowering.
1. Eriogonum arcuatum Greene var. xanthum (Small) Reveal
Annotated by Ben Legler on 4/20/2008.

U.S.A., New Mexico, Taos County: Vermejo Park Ranch: Culebra Range: steep east-facing bowl 1.2 air mi S of Big Costilla Peak and 0.1 air mi E of point 12931.
Steep talus, scree, and rock slopes; low alpine vegetation with Trifolium attenuatum, Penstemon whippleanus, Geum rossii, and Carex. Flowers light lemon-yellow; plants forming large rounded mats; common. Phenology: flowering.
1. Eriogonum arcuatum Greene var. xanthum (Small) Reveal
Annotated by Ben Legler on 4/20/2008.

U.S.A., New Mexico, Taos County: Vermejo Park Ranch: Culebra Range: 1/4 air mi NE of Big Costilla Peak.
Alpine tundra, rocky, with Trifolium parryi, Eritrichium nanum, Tetraneuris acaulis var. caespitosa, and Phlox pulvinata. Flowers bright yellow; stems forming dense low mats; common. Specimen GPS: 36.923466, -105.326187. Phenology: flowering.
1. Eriogonum arcuatum Greene var. xanthum (Small) Reveal
Annotated by Ben Legler on 5/9/2009.

U.S.A., New Mexico, Taos County: Vermejo Park Ranch: slope on west side of small stream between 3rd and 4th lakes at Casias Lakes; 1.6 air mi S of Big Costilla Peak.
Dry gravelly subalpine meadow on gentle east-facing slope, with Carex spp., Castilleja spp., Dasiphora fruticosa, and Pedicularis parryi. Flowers yellow; stems forming low dense mats. Specimen GPS: 36.89698, -105.32964. Phenology: flowering.

U.S.A., Colorado, Summit County: Front Range: Arapaho National Forest: Boreas Pass and Hoosier Ridge, ca 6 air mi SE of Breckenridge.
Rocky alpine meadows and talus slopes. Phenology: flowering.
Michael K. Kirkpatrick, 3977. 8/5/2010.

U.S.A., Colorado, Summit County: Front Range: White River National Forest: the Continental Divide to unnamed peak W of Loveland Pass and U.S. Hwy 6, ca 10 air mi ENE of Dillon.
Alpine meadows, talus slopes, and rock crevices. Phenology: flowering.
Michael K. Kirkpatrick, 8123. 8/1/2011.

U.S.A., Colorado, Clear Creek County: Arapaho National Forest: Mt. Goliath Researh Natural Area: east side of Mt. Evans Road, 7 air mi SW of Idaho Springs.
Tree line-alpine habitats. Phenology: flowering & fruiting.

U.S.A., Colorado, Summit County: Front Range: White River National Forest: the Continental Divide to unnamed peak W of Loveland Pass and U.S. Hwy 6, ca 10 air mi ENE of Dillon.
Alpine meadows, talus slopes, and rock crevices. Phenology: flowering.
Michael K. Kirkpatrick, 8123. 8/1/2011.
Accession: USFS (unaccessioned), Barcode: USFS0061166

U.S.A., Colorado, Park County: East-central Colorado: Mosquito Range to Plains: Continental Divide: along Lake Fork of the South Platte River to Gibson Lake and lower slopes of Whale Peak, ca 8.7 air mi NW of Jefferson.
On steep, gravelly alpine slopes Phenology: flowering.