Calflora
Taxon  Report   288    
Ambrosia acanthicarpa  Hook.
Annual burrweed,  Annual bursage, Annual burweed, Annual turweed
Ambrosia acanthicarpa
© 2009 Neal Kramer
Photos from
CalPhotos / Calflora
Ambrosia acanthicarpa
© 2003 Michelle Cloud-Hughes
Ambrosia acanthicarpa
© 2009 Steve Matson
Ambrosia acanthicarpa, a dicot, is an annual herb that is native to California, is also found elsewhere in North America and beyond.

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

Plant Characteristics
and Associations



Bloom Period
Ambrosia acanthicarpa
© 2003 Michelle Cloud-Hughes
Family: ASTERACEAE  
Genus: Ambrosia
Communities: Valley Grassland, Foothill Woodland, Coastal Sage Scrub
Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Franseria acanthicarpa
PLANTS: Gaertneria acanthicarpa
More information about  Ambrosia acanthicarpa
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 (AMAC2)

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: https://www.calflora.org/   (Accessed: Nov 16, 2018).

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