Calflora, a 501c3 non-profit
Distribution by County   12140    
Centaurea virgata  Lam.
Squarrose knapweed
Centaurea virgata is a perennial herb that is not native to California.
Record Count by County

Lassen: 20 Napa: 1 Shasta: 57 Trinity: 1
Modoc: 12 Plumas: 4 Siskiyou: 48

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:   (Accessed: 04/19/2024).