Calflora, a 501c3 non-profit
Distribution by County   1855    
Centaurea sulphurea  Willd.
Sicilian star thistle,   Sulphur knapweed
Centaurea sulphurea is an annual herb that is not native to California.

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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 12/02/2022).