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Taxon  Report  
Centaurea diluta  Aiton
North African knapweed,   Star thistle
Centaurea diluta is an annual herb that is not native to California.
There is a high risk of this plant becoming invasive in California according to Cal-IPC.
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Observation Search
(111 records)
redone or more occurrences
within a 7.5-minute quadrangle
bloom graphic
Bloom Period
Genus: Centaurea
Family: Asteraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Name Status:
Accepted by JEF + PLANTS

Information about  Centaurea diluta from other sources

[Cal-IPC] Europe native, Invasive: Centaurea diluta (North African knapweed) is an annual herb/ (family Asteraceae) with pink-purple flowers and lobed leaves found in the San Francisco Bay area and south coast ranges of California. It is native to southwestern Europe. It favors grasslands. Its hairy seeds are dispersed via wind. It was said to have been introduced to Great Britain as a contaminant in bird seed. Cal-IPC Rating: Watch (contributed by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 06/01/2023).