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Photo Guide : Asclepias asperula (Antelope Horns)

 
  • Low perennial herb from very stout rootstock, stems usually clustered from the rootstock, simple, rather stout
  • 2-6 dm tall
  • Leaves irregularly approximate; 10-20 cm long, 1-3cm wide
  • Flowers: Inflorescences solitary and terminal, usually very crowded, flowers rather large, pale yellowish green sometimes tinged with purple, blooming from March to August
  • Habitat: Flats and desert swales, sandy and rocky hillsides, with pinyon, juniper, oak, mesquite, Yucca, and Nolina
  • Distribution: CO and w TX to UT, AZ, NV, and adjacent ID and CA; Tamaulipas westward to Sonora and southward to Hidalgo and San Luis Potosi

Plant
(31 K)

Flower
(16 K)
flower
Flower
(17 K)
flower
Flower
(12 K)
Text taken from:
R.E. Woodson Jr., 1954. North American Species of Asclepias Annals of the Missouri Botanical Garden. 
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