Calflora, a 501c3 non-profit
Distribution by County   2140    
Cirsium occidentale  (Nutt.) Jeps.  var. californicum  (A. Gray) D. J. Keil & C. E. Turner
Bigelow thistle,   California thistle,   Cobwebby thistle
Cirsium occidentale var. californicum is a perennial herb that is native to California, and endemic (limited) to California.
Record Count by County

Alameda: 2 Lassen: 2 Nevada: 1 Santa Barbara: 67
Amador: 3 Los Angeles: 156 Orange: 45 Santa Clara: 2
Butte: 1 Madera: 7 Placer: 4 Sierra: 2
Calaveras: 3 Marin: 2 Riverside: 77 Stanislaus: 1
Contra Costa: 10 Mariposa: 20 San Benito: 1 Tulare: 38
El Dorado: 3 Mono: 2 San Bernardino: 73 Tuolumne: 19
Fresno: 17 Monterey: 60 San Diego: 248 Ventura: 43
Kern: 29 Napa: 1 San Luis Obispo: 32

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]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/02/2025).