Calflora, a 501c3 non-profit
Distribution by County   1854    
Centaurea squarrosa  Willd.

(not an active name)
Spreading thistle
Centaurea squarrosa is a perennial herb that is not native to California.
also called Centaurea virgata ssp. squarrosa
Cal-IPC rating: moderate
Record Count by County

Del Norte: 1 Nevada: 1 Siskiyou: 24
Lassen: 7 Plumas: 1 Tehama: 1
Modoc: 12 Shasta: 44 Trinity: 1

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/21/2024).