Calflora, a 501c3 non-profit
Distribution by County   7049    
Ranunculus occidentalis  Nutt.
Western buttercup
Ranunculus occidentalis is a perennial herb that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 1 Kern: 28 Nevada: 88 Solano: 6
Alpine: 3 Lake: 51 Placer: 93 Sonoma: 54
Amador: 20 Lassen: 61 Plumas: 98 Sutter: 5
Butte: 129 Los Angeles: 1 Riverside: 26 Tehama: 28
Calaveras: 26 Madera: 8 Sacramento: 2 Trinity: 71
Colusa: 16 Marin: 3 San Benito: 3 Tulare: 13
Contra Costa: 18 Mariposa: 25 San Diego: 13 Tuolumne: 44
Del Norte: 26 Mendocino: 65 Santa Clara: 9 Yolo: 5
El Dorado: 111 Merced: 1 Santa Cruz: 2 Yuba: 29
Fresno: 21 Modoc: 75 Shasta: 89
Glenn: 2 Mono: 3 Sierra: 50
Humboldt: 93 Napa: 45 Siskiyou: 39

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: 04/22/2026).