Asclepias asperula var. asperula (1997)
APOCYNACEAE
Asclepias asperula (Decne.) Woodson var. asperula
U.S.A., Colorado, Fremont County: East-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: Twin Mountain: on south slopes and stream gulches just off U. S. Hwy 50, ca 6 air mi NW of Ca¤on City.
On rocky, open slopes in pinyon-juniper. Phenology: flowering.
with Irene Thien
Accession: RM (unaccessioned)

Asclepias asperula var. asperula (1997)
APOCYNACEAE
Asclepias asperula (Decne.) Woodson var. asperula
U.S.A., Colorado, Fremont County: [location and coordinates withheld]
On rocky sandstone slopes in pinyon-juniper. Phenology: fruiting.
with Irene Thien
Accession: RM (unaccessioned)

Asclepias asperula var. asperula (2005)
APOCYNACEAE
Asclepias asperula (Decne.) Woodson var. asperula
U.S.A., Arizona, Coconino County: Kaibab National Forest: Coconino Wash uplands, ca 8 mi E of Tusayan.
Elev. 7300 ft.
UTM Zone 12S, 413100E, 3978100N; GPS Reading
Ponderosa pine forest. Phenology: flowering.
Annotations:
1. Asclepias asperula (Decne.) Woodson var. asperula
Annotated by B. E. Nelson.
with Carolyn Sieg
Accession: RM (unaccessioned)

U.S.A., Colorado, Archuleta County: Eastern San Juan Mountains: Valle Seco and ridge S of the head of Frio Canyon, ca 9.5 air mi S of Pagosa Springs.
Clay knoll with scattered ponderosa pine, Douglas fir, juniper, and little ground cover. Phenology: flowering.
Annotations:
1. Asclepias asperula (Decne.) Woodson var. asperula
Annotated by Jeanette Flaig.
Accession: RM 794693

U.S.A., Colorado, Archuleta County: Eastern San Juan Mountains: San Juan National Forest: Forest Road 649, ca 3.2 air mi WSW of County Road 500.
Ponderosa pine forest with oak and Rocky Mountain juniper and roadside; ponderosa pine forest. Phenology: flowering.
Annotations:
1. Asclepias asperula (Decne.) Woodson var. asperula
Annotated by Jeanette Flaig.
with Jeanette Flaig
Accession: RM 794692

U.S.A., Colorado, Archuleta County: Eastern San Juan Mountains: San Juan National Forest: Colo Hwy 151, 6 air mi NW of Forest Road 613.
Sandy at bottom then shale and sandstone outcrops with ponderosa pine forest and scattered Gambel oak and Fendlera understory above; sandy areas and outcrop. Phenology: flowering.
Annotated by Jeanette Flaig.
with Jeanette Flaig
Accession: RM 794691

U.S.A., Colorado, Saguache County: Eastern San Juan Mountains: North Tracy Canyon, vicinity of Devils Knob, 3 air mi SW of Saguache.
Elev. 8340 ft.
Southeast-facing slope to rocky summit and along ridge to knob. Phenology: flowering.
with Kurt Flaig

U.S.A., Arizona, Apache County: Apache National Forest: Little Colorado drainage, under rim.
Elev. 8500 ft.
North slope; gravelly loam; scattered to common; with bunchgrasses and lupine. Phenology: flowering.
Charles K. Cooperrider, 2P. 8/26/1920.
Accession: USFS 491088

U.S.A., Arizona, Coconino County: Kaibab National Forest: W of Jacob. [Jacob Lake]
1% west slope; shallow gravel; not abundant in timber with Poa, Sitanion and locust. Phenology: flowering.
Accession: USFS 491086

U.S.A., New Mexico, Taos County: Carson National Forest and Vicinity: Cerro de la Olla, southeast aspect, ca 10 air mi NE of Questa.
Pinyon/juniper and ponderosa pine/Gambel oak forests. Phenology: flowering.
Accession: RM 940422, Barcode: RM0112643

U.S.A., New Mexico, Colfax County: Carson National Forest and Vicinity: Sangre de Cristo Range: southern boundary of Valle Vidal Unit via NM Hwy 204, ridgeline above Middle Ponil Creek in Ponil burn area, ca 11 air mi NE of Eagle Nest.
Canyon wall, ridgeline and burned ponderosa pine forest. Phenology: flowering.
Accession: RM 940421, Barcode: RM0112642

U.S.A., New Mexico, Rio Arriba County: Carson National Forest and Vicinity: Jicarilla Ranger District: Forest Road 309E and 309F in Cabresto Canyon.
Canyon bottom and sandstone slopes with pinyon/juniper. Phenology: flowering.
Accession: RM 940423, Barcode: RM0112644

U.S.A., Colorado, Montrose County: San Miguel and lower Dolores River Drainages: San Miguel River Drainage: Long Park, Horsethief Spring, ca 5 air mi NE of Uravan.
Exposed Dakota sandstone with pinyon and juniper. Phenology: flowering.
Accession: (unaccessioned)

U.S.A., Colorado, Mesa County: San Miguel and Lower Dolores River Drainages: ca 5 air mi NE of Gateway.
Dry wash and adjacent hillsides: on barren, granitic gravel on east side and red, sandy soils on west side; with pinyon and juniper. Phenology: flowering.
Accession: (unaccessioned)

U.S.A., Utah, Grand County: San Miguel and Lower Dolores River Drainages: slopes above Buckhorn draw.
Granitic slopes with juniper and Purshia. Phenology: flowering.
Accession: (unaccessioned)

U.S.A., Colorado, Montrose County: San Miguel and Lower Dolores River Drainages: San Miguel River Drainage: draw above Clay Creek just inside forest boundary.
With pinyon, juniper Cercocarpus, and Peraphyllum. Phenology: buds.

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

U.S.A., New Mexico, Dona Ana County: Jornada Experimental Range: San Andres Mountains: Ash Canyon.
Phenology: flowering.
Annotated by Elbert L. Little Jr..
Accession: USFS 491094

U.S.A., Colorado, Montezuma County: Upper Dolores River Drainage and Adjacent Areas: ca 17.5 air mi S of Dove Creek, side road ca 0.25 road mi W of County Road Y, on ridge between Hovenweep Canyon and Negro Canyon.
Elev. 2000 m.
Pinyon-juniper zone with Artemisia, antelope brush, and Cercocarpus. Phenology: flowering.

U.S.A., New Mexico, Santa Fe County: Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: Rio Frijoles Trail 154 just E of Santo Domingo de Cundiyo Land Grant, 8 air mi SE of Chimayo. SE in canyon along trail for 0.2 air mi from E edge of land grant.
Riparian of river, and meadows, in canyon bottom with mixed conifer slopes. Canyon tightening upstream with encroachment of granitic cliffs. Phenology: flowering.

U.S.A., Arizona, Pima County: Santa Rita Range Reserve: pasture 2, near Proctor gate.
West slope; gravelly sand; common with Gilia, ragweed and lupine. Phenology: flowering.

U.S.A., New Mexico, Sandoval County: Santa Fe National Forest and Vicinity: Jemez Mountains: Arroyo Montasa canyon, 1 air mi up canyon from junction with the Rio Grande River and across river from Bandelier National Monument. W 0.3 air mi to N35.716 W106.256 at pour off.
Riparian bottom; steep, metamorphoic canyon walls with juniper . Phenology: flowering.

U.S.A., New Mexico, Santa Fe County: Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: Pecos Wilderness: Rio Medio Trail 155 adjacent to Rio Medio in vicinity of Borrego Mesa Campground off Forest Road 436, 6 air mi due W of Truchas Peak.
North canyon slope, departing the river, through a ponderosa pine burn with mostly dead, standing timber above; ca 1 m tall Gambels oak below. Phenology: flowering.

U.S.A., New Mexico, Santa Fe County: Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: County Road 503 N into La Caja Canyon on Debris Basin Trail and along Rio Medio to southern end of Santa Cruz Reservoir, 1 air mi W of Cundiyo.
Pinyon/juniper slopes and dry wash. Phenology: flowering & fruiting.

U.S.A., New Mexico, San Miguel County: Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: from North San Ysidro NNE to lower Apache Canyon. N35.478 W105.547 at forest boundry N 0.5 air mi parallel trail to N35.485 W105.548.
Dry wash with exposed bedrock in pinyon-juniper woodland. Phenology: flowering.

U.S.A., New Mexico, Santa Fe County: Santa Fe National Forest and Vicinity: Jemez Mountains: County Road 77 (Buckman Road) at Alamo Creek, 9 air mi SE of White Rock. Within 1/4 air mi of N35.743 W106.08.
Dry wash of coarse granite and broad lowland with scattered juniper in juniper hills. Phenology: flowering.

U.S.A., New Mexico, Santa Fe County: Santa Fe National Forest and Vicinity: Jemez Mountains: Caja del Rio Plateau: County Road 77 (Buckman Road) at Rio Grande River and Buckman, 2 air mi due E of White Rock.
Juniper hills on sedimentary soils east of river. Phenology: flowering.

U.S.A., New Mexico, Los Alamos County: [location and coordinates withheld]
Rocky slopes. Phenology: flowering.

U.S.A., Arizona, Coconino County: Kaibab National Forest: Little Mountain W of Big Springs.
T37N R1W S13
Flat, gravelly soil; scarce in timber. Phenology: flowering.

U.S.A., Arizona, Pima County: Santa Rita Experimental Range: southeast corner of pasture #8.
Gentle west slope; rocky loam; open mesa; scarce among rocks; with Mewquite, Calliandra and Acacia. Accession number duplicated in the database: specimen not verified. Phenology: flowering.
with Arthur J. Riggs

U.S.A., Arizona, Gila County: Tonto National Forest; Sierra Ancha Mountains; Petersons Ranch.
T6N R14E S33
Phenology: fruiting.
Barnard A. Hendricks, 2046. 6/24/1934.

U.S.A., Colorado, Montrose County: 7.4 mi due ENE of Paradox: Dolores River Canyon.
Pinyon, juniper; clay soil. Phenology: flowering.

U.S.A., Colorado, Montrose County: East Paradox Creek: Paradox Valley: E of Dolores River, Davis Mesa Quadrangle.
Alluvium, Cutler Formation, pinyon-juniper woodland. Phenology: flowering.

U.S.A., Colorado, Mesa County: Dolores River Canyon: 3.5 mi S of Gateway.
Phenology: flowering.

U.S.A., Colorado, Moffat County: Lodore Canyon: W rim.
In sandy soil among pinyons. Phenology: flowering.
Annotated by C. L. Porter in 1956.

U.S.A., Colorado, Archuleta County: Arboles.
Phenology: flowering.
Annotated by C. L. Porter in 1956.
1.
Annotated by Edward L. Greene in 1956.

U.S.A., Colorado, Archuleta County: Arboles.
Annotated by C. L. Porter in 1956.
1.
Annotated by Edward L. Greene in 1956.

U.S.A., New Mexico, Bernalillo County: Albuquerque to Santa Fe: highway.
T11N R3E
Roadside. Bernalillo or Santa Fe county Phenology: flowering.

U.S.A., Colorado, Garfield County: White River National Forest: Glenwood Canyon.
T5S R87W S30
40 degree south slope, rocky clay bank; with Bromus tectorum, Salsola and Erigonum. Phenology: flowering.
Annotated by William F. Jennings in 2003.

U.S.A., Colorado, Las Animas County: Trinidad: ravine W of town
Phenology: fruiting.
Earl Lynd Johnston, 819. 6/14/1917.
with George G. Hedgecock

U.S.A., Colorado, Montrose County: Naturita.
Dry hillside. Phenology: flowering.

U.S.A., Colorado, Mesa County: Ca 11 air miles SW of Mack, ca 0.2 mi SW of mouth of McDonald Creek; directly above Colorado River.
Sandy pockets in rim rock, Kayenta and Wingate formations, juniper-ephedra community. Phenology: flowering.
with R. Abbott

U.S.A., Colorado, Las Animas County: Trinidad.

U.S.A., Colorado, Archuleta County: Pagosa Springs.
Phenology: fruiting.
Ellsworth Bethel, 7445b. 9/4/1917.

U.S.A., New Mexico, Rio Arriba County: Santa Fe National Forest: Beaver Creek.
20 degree south slope, sandy loam. Phenology: flowering.
Annotated by B. E. Nelson in 2003.

U.S.A., Colorado, Garfield County: Glenwood Springs.

U.S.A., Colorado, Fremont County: Canon City.
Phenology: flowering & fruiting.
George E. Osterhout, 644. 6/27/1895.

U.S.A., Colorado, Huerfano County: Walsenburg.
George E. Osterhout, s.n.. 6/27/1898.

U.S.A., New Mexico, Colfax County: Carson National Forest: near Madrid Ranch.
South slope, gravelly clay. Phenology: fruiting.
Annotated by B. E. Nelson in 2003.

U.S.A., New Mexico, Colfax County: Carson National Forest: near Madrid Ranch.
South slope, gravelly clay. Phenology: fruiting.

U.S.A., Colorado, Fremont County: Royal Gorge.
Harry Hapeman, s.n.. 7/4/1920.

U.S.A., Colorado, Archuleta County: Piedra: near base of South Chimney Rock.

U.S.A., Colorado, Fremont County: Canyon City.
Elev. 2135 m.
Dry hillsides. Phenology: flowering.

U.S.A., Colorado, Jefferson County: Pike National Forest: South Platte burn.
Open grassland, south slope, rotten granite. Phenology: flowering.

U.S.A., Colorado, Mesa County: Dolores River Canyon N of Gateway.
In purple arkosic sand at base of ridge of Cutler formation. Phenology: flowering & fruiting.

U.S.A., Colorado, Las Animas County: Frijoli Hill, 10 miles SE of Trinidad.

U.S.A., Colorado, Garfield County:
Shale-clay slope with Lesquerella and Mentzelia. Phenology: flowering.

U.S.A., Colorado, Fremont County: Texas Creek Gulch: N of Texas Creek.
Rocky wash with Melampodium and Thelesperma. Phenology: flowering & fruiting.

U.S.A., Colorado, San Miguel County: Montezuma National Forest: Beaver Creek Canyon.

U.S.A., New Mexico, Colfax County: Philmont Scout Ranch, near Cimarron: 3 mi W of Rayado.
Hillside. Phenology: flowering.

U.S.A., Colorado, Montezuma County: Mesa Verde National Park.
Jul-Aug 1913 Phenology: flowering.

U.S.A., Colorado, Garfield County: Cow Creek; 1.5 mi SE of junction of Cow Creek and West Branch Cow Creek.
Elev. 2316 m.
T4S R94W S20 NE1/4 of NW1/4 of NW1/4
On slope with Quercus and Pseudotsuga. Phenology: flowering.
with S. Sigstedt

Asclepias asperula var. asperula ()
U.S.A., New Mexico, no county County: Santa Fe National Forest: below Leonard Ranch.
Sandy loam. Phenology: flowering.
W. M. Stevenson, 173. //.

U.S.A., New Mexico, Santa Fe County: Lamy.

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Park Plateau: in Road Canyon at the Vallorso site and Bear Canyon Mine site, ca 5.5 air mi SW of Ludlow; ca 10.8 air mi NW of Trinidad.
Pinyon-juniper-oak woodland. Phenology: flowering.

U.S.A., Colorado, Pueblo County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Pueblo Reservoir State Park: ca 3.5 road mi W of the west entrance on Colo Hwy 96.
Small grade; prairie and pinyon-juniper. Phenology: flowering.

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

U.S.A., Colorado, Las Animas County: [location and coordinates withheld]
Pinyon-juniper.

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

U.S.A., New Mexico, Quay County: Ute Lake State Park: vicinity of end of County Road AC.
Rocky outcrops in steppe; sandy soil; above banks of reservoir. Phenology: flowering.
Annotated by Michael Schiebout.

U.S.A., Colorado, Otero County: Comanche National Grassland: Vogal Canyon, from trail head to south end at fence line.
Pinyon-juniper canyonland, sandstone; with willow and cottonwood thickets near fence. Phenology: flowering.
Annotated by Ronald L. Hartman.
with Bernadette Kuhn, Laura E. Lukas

U.S.A., Colorado, Las Animas County: Comanche National Grassland: Purgatoire Canyon, northeast end.
Rimrock and slope below to flats along river. Phenology: flowering.
Annotated by Ronald L. Hartman.
with Bernadette Kuhn, Laura E. Lukas

U.S.A., Colorado, Otero County: Comanche National Grassland: Picketwire (Purgatoire) Canyon, ca 27 air mi SSW of La Junta.
Dakota sandstone rock outcrops, sandy soil along trail with scattered Atriplex and Juniperus monosperma. Phenology: flowering & fruiting.
Annotated by Bernadette Kuhn.
with Cali Hemenway

U.S.A., Colorado, Baca County: Comanche National Grassland: Whitby Canyon N of Big Hole Spring, ca 21 air mi SSW of Pritchett.
Dakota sandstone canyon dominated by Juniperus monosperma, Quercus sp. and Rhus aromatica. Phenology: flowering.
Annotated by Bernadette Kuhn.

U.S.A., Colorado, Las Animas County: [location and coordinates withheld]
Shale hills, uplands dominated by Pinyon and juniper. Creek bed with large patches of Rumex. Phenology: fruiting.
Annotated by Bernadette Kuhn.

At spring. Phenology: fruiting.
with Darla Jackson, Lonnie Jackson

U.S.A., Colorado, Baca County: Comanche National Grassland: E of East Carrizo Creek, ca 11 air mi S of Utleyville; ca 20 air mi SW of Pritchett.
Dakota sandstone canyon dominated by Rhus aromatica, Pinus edulis, and Juniperus monosperma. Phenology: flowering.

Hillside with Amorpha and Rhus aromatica. Phenology: flowering.
with Everett Jackson

U.S.A., New Mexico, Colfax County: Vermejo Park Ranch: on north side of NM Hwy 555 4.2 road mi W of where Hwy 555 joins U.S. Hwy 64; 4.8 air mi SW of Raton.
Dry open Pinus edulis woodland with Quercus ×undulata and scattered Juniperus monosperma, on gentle rolling terrain at base of steep sandstone bluffs. Petals creamy-green; corona maroon; uncommon on edge of pine woodland. Photographed. Phenology: flowering.
Annotated by Ben Legler on 3/25/2008.

U.S.A., New Mexico, Colfax County: Vermejo Park Ranch: rocky point between intersection of Gachupin Canyon and Vermejo River, 9 air mi SE of Casa Grande.
Open Pinus edulis woodland, dry rocky soil over sandstone, sparse ground cover. Petals green with faint maroon tinge; corona maroon; stems in clumps; rare at base of Quercus. Phenology: flowering.
Annotated by Ben Legler on 3/25/2008.

U.S.A., Colorado, Las Animas County: Vermejo Park Ranch: slope on west side of Lorencito Canyon 0.47 mi N of mouth of Cottonwood Canyon.
Rocky southeast-facing slope dominated by a mix of Pinus edulis, Pinus ponderosa, Juniperus scopulorum, and shrubby Quercus ×undulata. Petals greenish; corona maroon; rare on edge of forest. Phenology: flowering.
Annotated by Ben Legler on 3/25/2008.

U.S.A., New Mexico, Colfax County: Vermejo Park Ranch: around Van Bremmer Creek at mouth of Van Bremmer Canyon, 1.8 air mi NW of NM Hwy 64.
Flat, dry shortgrass prairie with Cylindropuntia imbricata, Cirsium undulatum, and Psoralidium tenuifolium. Petals pale green, cupped around flower, not reflexed; corona dull red, strongly curved with a rounded tip; stems spreading-ascending from a branched crown; uncommon on edge of prairie. Specimen GPS: 36.593391, -104.798668. Phenology: flowering.

U.S.A., New Mexico, Colfax County: Vermejo Park Ranch: crest of small hill 0.3 air mi S of the Vermejo River and 1.2 air mi E of I-25; 3.6 air mi S of Maxwell.
Rocky knoll on prairie, with Artemisia bigelovii, Eriogonum jamesii var. jamesii, and Bouteloua curtipendula. Stems mostly solitary; uncommon. Photographed. Specimen GPS: 36.485481, -104.555191. Phenology: fruiting.

U.S.A., Colorado, Pueblo County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: on Colo Hwy 96, E of Wetmore, just over the county line.
Prairie after steep grade. Phenology: flowering.
with Kenneth Elliott

U.S.A., Colorado, Pueblo County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Rock Creek Hill, on Colo Hwy 78, SW of Pueblo.
Pinyon-juniper; prairie.
with Kenneth Elliott

U.S.A., Colorado, Huerfano County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: at Exit 42 on I-25.
Grassland. Phenology: flowering.
with Kenneth Elliott

U.S.A., Colorado, Fremont County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: ca 2.5 road mi on County Road 1 from County Road 28.
Dry, sandy soil; dominant species: pinyon and Chrysothamnus. Phenology: flowering.
Annotated by Brian Elliott.
with Brian Jacobs and Alex Morgan

U.S.A., Colorado, Custer County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: San Isabel National Forest: ca 2.3 road mi on Forest Road 388 off of Greenwood Road.
Dominant species: oak, mountain mahogany, some ponderosa; sandy soil. Phenology: flowering.
Annotated by Brian Elliott.
with Brian Jacobs and Alex Morgan

U.S.A., Colorado, Fremont County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: ca 3.9 road mi S on Oak Creek Grade Road from Canon City; from ca 0.5-2.5 trail mi past Tanner Trailhead, on and around the trail.
Dominant species: pinyon pine, mountain mahogany, and oak; ponderosa and blue spruce at higher elevations; mainly granite outcrops, soil sandy to gravelly in texture.
Annotated by Brian Elliott.
with Brian Jacobs and Alex Morgan

U.S.A., Colorado, Fremont County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: ca 1 road mi on Gulch Road from Colo Hwy 69.
Granite and metamorphic chunks; dominant species: pinyon, oak, and juniper.

U.S.A., New Mexico, Harding County: Jack and Tuta Cruwz's Ranch: 20 air mi NE of Mosquero.
Sandstone rise into mesa to junipers. Phenology: flowering & fruiting.
Michael Schiebout, 4443. 5/25/2005.

U.S.A., New Mexico, San Miguel County: Las Vegas National Wildlife Refuge: 5.7 air mi SSE of Las Vegas.
Trail going into steppe/ shaded canyons and ravine. Phenology: flowering & fruiting.
Michael Schiebout, 3716. 5/19/2005.

U.S.A., Colorado, Fremont County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Temple Canyon Road, ca 3.5 air mi SW of Canon City (city center).
Rocky slopes and grasslands.
with Brian Elliott

U.S.A., Colorado, Huerfano County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: southeast end of Wet Mountains, ca 13 air mi NW of Walsenburg.
Rocky ridges and grassy valley. Sheet 1 of 2. Phenology: flowering.
with Melanie Arnett, Charity Hall, Brian Jacobs, and Alex Morgan

U.S.A., Colorado, Pueblo County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Colo Hwy 78, ca 5.5 air mi SW of Pueblo (city center).
Roadcut with calcareous substrate.

U.S.A., Colorado, Pueblo County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: abandoned rest area on I-25 near Muddy and Greenhorn creeks.
Grassland, weedy areas, and pinyon-oak-juniper.

U.S.A., Colorado, Fremont County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: ca 0.5 mi SE of junction of U.S. Hwy 50 and 3 Road at Parkdale, W of Pueblo.
Pinyon-juniper. Phenology: flowering.
Annotated by Ronald L. Hartman.
with Elizabeth Mark

U.S.A., Colorado, Fremont County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: base of YMCA Mountain on Temple Canyon Road, ca 2 air mi SW of Canon City.
Pinyon-juniper. Phenology: flowering.
with Elizabeth Mark

U.S.A., Colorado, Huerfano County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: ca 1.5 mi W of Badito Cone, ca 6 air mi E of Gardner.
Pinyon-juniper. Phenology: flowering.
with Elizabeth Mark and Kenneth Elliott

U.S.A., Colorado, Las Animas County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Park Plateau: Bosque de Oso Wildlife Area, Torres Canyon, SW of Weston.
Riparian with Quercus. Phenology: flowering.
with Elizabeth Mark

U.S.A., Colorado, Huerfano County: Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: southeast end of Wet Mountains, ca 13 air mi NW of Walsenburg.
Rocky ridges and grassy valley. Sheet 2 of 2. Phenology: flowering.
with Melanie Arnett, Charity Hall, Brian Jacobs, and Alex Morgan

U.S.A., Utah, Daggett County: North Slope Uinta Mountains: Flaming Gorge National Recreation Area: ca 1 air mi W of Flaming Gorge Dam; Cart Creek drainage into Flaming Gorge.
T2N R22E S16 South1/2
Dry pinyon-juniper uplands with clay soils, sandstone bluffs, and steep slopes. Phenology: flowering & fruiting.
with Kelly Altenhofen and Lorie Talbott

U.S.A., Colorado, Delta County: Gunnison Gorge Wilderness: Ute Trail to Gunnison River, ca 13 air mi ESE of Delta.
Gully in steep, rocky sandstone hillside. Phenology: flowering.
1. Asclepias asperula (Decne.) Woodson var. asperula .

U.S.A., Colorado, Fremont County: East-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: Texas Creek Gulch off Table Mountain or County Road 217A, ca 3 air mi NNW of town of Texas Creek.
In open meadow with sandy soils and large old slash piles. Phenology: flowering.
with Irene Thien

U.S.A., Colorado, Fremont County: East-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: Sixmile Park: from Indian Springs Campground N along a tributary of Sixmile Creek, following an old road; ca 6 air mi NW of Canon City.
Sandstone slopes and sandy washes. Phenology: flowering.

U.S.A., Colorado, Fremont County: East-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: Twin Mountain off U.S. Hwy 50, ca 5.6 air mi NW of Canon City; ca 2 road mi from turnoff to Royal Gorge.
Open wooded slopes on coarse sandy soils. Phenology: flowering.

U.S.A., Colorado, Douglas County: East-central Colorado: Mosquito Range to Plains: Rampart Range: off Colo Hwy 67 along Horse Creek, ca 1/2 air mi SE of Deckers; ca 20.1 air mi NNW of Woodland Park.
Coarse granitic gravel slopes above creek, in ponderosa pine. Phenology: flowering.

U.S.A., Colorado, Fremont County: East-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: Phantom Canyon: in Phantom Canyon off Colo Hwy 67, ca 5.5 air mi NE of Canon City.
On rocky granitic-gravelly soils in pinyon-juniper and Gambel's oak. Phenology: flowering.