Asclepias asperula subsp. asperula

Antelope-horns, Antelope-Horns, antelope-horns

Family: Apocynaceae · Type: perennial · Native

Conservation status: CNPS 4.3

Antelope-horns is a California native perennial found in the eastern Mojave Desert in dry, open, rocky places at elevations of 1,500 to 2,000 meters. Flowering from March to September, this plant produces green-white flowers with distinctive dark purple hoods and compact clusters on terminal stems. Growing with decumbent to ascending stems 15 to 45 centimeters tall that are slightly hairy, it develops a sparse, open structure. Its leaves are alternate or sometimes arranged in groups of three, with narrow linear-lanceolate blades that spread along the stem. The plant produces distinctive erect fruits with reflexed pedicels, each containing seeds 6 to 8 millimeters long.

Habitat: Dry, open, rocky places

Bloom period: Mar-Sep

Elevation: 1500-2000 m

Bioregions: DMoj

California counties: San Bernardino

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.