Asclepias asperula
(Antelope Horns)
Asclepias asperula, Trinidad Lakes State Park, Las Animas Co. 8203
Asclepias asperula, Trinidad Lakes State Park, Las Animas Co. 8210
Asclepias asperula, Trinidad Lakes State Park, Las Animas Co. 8196
| Scientific Name | Asclepias asperula ssp. asperula | USDA PLANTS Symbol | ASASA |
| Common Name | Antelope Horns, Spider Milkweed | ITIS Taxonomic Serial No. | 30248 |
| Family | Apocynaceae (Dogbane) | SEINet Reference |
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| Description | Life zones and habitat: Plains an foothills (4000 to 7600 ft.); sandy soils in open coniferous woodlands. Plant: Low-growing perennial 8 to 28 inches tall; may recline on the ground. Leaves: Narrow lanceolate to linear-lanceolate leaves 3 to 8 inches long, often folded; acute tip. Inflorescence: Numerous flowers crowded in terminal spherical clusters; each about 1/2-inch across with five upward-curving, pale yellowish-green corolla lobes (petals); "J"- to "C"-shaped hoods are reddish purple with white upper margins, spreading out and upward and attaching at the base to anther head (gynostegium); horns inside hoods. Bloom Period: May to July. References: "Flora of Colorado" by Jennifer Ackerfield, "Colorado Flora-Eastern Slope" by Weber and Wittmann, "Manual of the Vascular Plants of Texas" by Correll and Johnston, SEINet, and Flora of North America. |
BONAP Distribution Map Map Color Key |
Colorado Status: Native |
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