Taxon  Report   299 
Ambrosia pumila  (Nutt.) A. Gray
Ragweed,  San diego ambrosia, San diego ragweed
Ambrosia pumila
© 2005 Vince Scheidt
More photos from
CalPhotos / Calflora
Ambrosia pumila
© 2013 Keir Morse
Ambrosia pumila
© 2013 Keir Morse
Ambrosia pumila, a dicot, is a perennial herb (rhizomatous) that is native to California and Baja California.
CNPS Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

It is listed by the Federal Government as Endangered .

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Ambrosia pumila
© 2010 Benjamin Smith
Genus: Ambrosia
Chaparral, Valley Grassland, Coastal Sage Scrub, Freshwater Wetlands
Habitat: vernal-pools, disturbed
Wetlands: Occurs usually in non wetlands, occasionally in wetlands
Name Status:
Accepted by JEF + CNPS + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Franseria pumila
More information about  Ambrosia pumila
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on

Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

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:   (Accessed: Jun 18, 2018).

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