Taxon  Report   1847    
Centaurea diffusa  Lam.
Diffuse knapweed,  White knapweed
Centaurea diffusa
© 2001 CDFA
Photos from
CalPhotos / Calflora
Centaurea diffusa
© 2001 CDFA
Centaurea diffusa, 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
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Centaurea diffusa
© 2002 Molly Elizabeth Bagley
Genus: Centaurea
Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Acosta diffusa
More information about  Centaurea diffusa
Photos on Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


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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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 22, 2019).