Calflora, a 501c3 non-profit
Distribution by County   10676    
Ranunculus aquatilis  L.  var. aquatilis 
White water butter cup
Ranunculus aquatilis var. aquatilis is a perennial herb (aquatic) that is native to California.
also called Ranunculus aquatilis var. hispidulus
Record Count by County

Alameda: 4 Lake: 5 Plumas: 7 Sonoma: 12
Alpine: 3 Lassen: 7 Riverside: 2 Stanislaus: 1
Amador: 1 Mariposa: 1 Sacramento: 7 Sutter: 1
Butte: 26 Mendocino: 22 San Diego: 8 Tehama: 11
Calaveras: 5 Merced: 2 San Joaquin: 1 Trinity: 1
Colusa: 1 Modoc: 9 Santa Clara: 2 Tulare: 1
El Dorado: 4 Monterey: 1 Shasta: 3 Tuolumne: 2
Fresno: 2 Napa: 5 Sierra: 1 Yuba: 1
Humboldt: 4 Nevada: 2 Siskiyou: 3
Kern: 3 Placer: 6 Solano: 3

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: 12/10/2025).