Taxon  Report   7153 
Ricinus communis  L.
Castor bean,  Castorbean
Ricinus communis
© 2005 Louis-M. Landry
Click on a photo to see it bigger.
Ricinus communis
© 2004 Joseph Dougherty/
Ricinus communis
© 2009 Thomas Stoughton
Ricinus communis, a dicot, is a shrub that is not native to California; it was introduced from elsewhere and naturalized in the wild.
It is an invasive plant. The California Invasive Plant Council classifies its potential impact on native ecosystems as limited (plant profile / CalWeedMapper).

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
Ricinus communis
© 2005 George W. Hartwell
Genus: Ricinus
weed, characteristic of disturbed places
Habitat: disturbed [Walker]
Wetlands:Usually occurs in non wetlands, but occasionally found in wetlands [U.S. Fish & Wildlife Service.]
Toxicity: MAJOR   [California Poison Control System 2010]    
Name Status:
Accepted by TJM2 + PLANTS + JM93
More information about  Ricinus communis
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

Search (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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 23, 2016).

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