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: 2 Santa Clara: 2
Alpine: 1 Los Angeles: 114 Orange: 63 Sierra: 3
Amador: 2 Madera: 8 Placer: 6 Stanislaus: 1
Butte: 1 Marin: 2 Riverside: 66 Tulare: 34
Calaveras: 3 Mariposa: 23 San Benito: 1 Tuolumne: 22
Contra Costa: 11 Mendocino: 2 San Bernardino: 43 Ventura: 41
El Dorado: 4 Mono: 2 San Diego: 225
Fresno: 20 Monterey: 56 San Luis Obispo: 35
Kern: 33 Napa: 3 Santa Barbara: 82

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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 06/10/2026).