Calflora Taxon Report
Asclepias asperula  (Decne.) Woodson  ssp. asperula 
Antelope horns,   Spider milkweed
Asclepias asperula ssp. asperula is a perennial herb that is native to California, and also found elsewhere in western North America.
California Rare Plant Rank: 4.3 (limited distribution).
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
~43 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period
Parent: Asclepias asperula
Genus: Asclepias
Family: Apocynaceae  
(Asclepiadaceae)
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Toxicity: Do not eat any part of this plant.

Communities: Pinyon-Juniper Woodland

Name Status:
Accepted by JEF + CNPS + PLANTS
Alternate Names:
JEFAsclepias capricornu ssp. occidentalis
Information about Asclepias asperula ssp. asperula from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (ASASA)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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