Taxon  Report   299    
Ambrosia pumila  (Nutt.) A. Gray
Ragweed,  San diego ambrosia, San diego ragweed
Ambrosia pumila, a dicot, is a perennial herb (rhizomatous) that is native to California, Baja California.
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).   CNPS Inventory

It is listed by the Federal Government as Endangered .
Observation Search
(108 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Ambrosia
Wetlands: Occurs usually in non wetlands, occasionally in wetlands

Habitat: vernal-pools, disturbed

Communities: Chaparral, Valley Grassland, Coastal Sage Scrub, Freshwater Wetlands

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
PLANTS: Franseria pumila
More information about  Ambrosia pumila
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora


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]. 2020. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Mar 30, 2020).