Taxon  Report   6016    
Oxalis pes-caprae  L.
Bermuda buttercup,  Sourgrass
Oxalis pes-caprae
© Jo-Ann Ordano 2005 California Academy of Sciences
Photos from
CalPhotos / Calflora
Oxalis pes-caprae
© 2016 Ron Vanderhoff
Oxalis pes-caprae
© 2016 Ron Vanderhoff
Oxalis pes-caprae, a dicot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild. Cal-IPC rating: Moderate

Interactive Distribution Map

Observation Hotline
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point, line, or polygon

one or more occurrences
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Plant Characteristics
and Associations

Bloom Period
Oxalis pes-caprae
© 2017 Ken Lunders
Genus: Oxalis
Communities: agricultural weed

Habitat: disturbed

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Bolboxalis cernua
PLANTS: Oxalis cernua
More information about  Oxalis pes-caprae
Photos on   /   Google Images
UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

Bay Nature:  ... a weed native to South Africa that was transplanted to California early in the 1900s, ... Oxalis crowds out native wildflowers for light and space, and prevents other plants from gaining a foothold in the land.

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: Dec 18, 2018).