Calflora
Taxon  Report   747    
Asclepias fascicularis  Decne.
Mexican whorled milkweed,  Narrow leaf milkweed
Asclepias fascicularis
© 2003 Christopher L. Christie
Photos from
CalPhotos / Calflora
Asclepias fascicularis
© 2003 Christopher L. Christie
Asclepias fascicularis
© 2009 Neal Kramer
Asclepias fascicularis, a dicot, is a perennial herb that is native to California, is also found outside of California, but is confined to western North America.

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

Plant Characteristics
and Associations


Bloom Period
Asclepias fascicularis
© 2003 Michael Charters
Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Foothill Woodland, Chaparral, Valley Grassland, (many plant communities), wetland-riparian

Toxicity: MINOR, DERMATITIS

Wetlands: Equally likely to occur in wetlands and non wetlands

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Asclepias mexicana
More information about  Asclepias fascicularis
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (ASFA)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

website references from Google


Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Oct 20, 2018).

The information on this page comes from diverse sources. None of the links are sponsored.