Calflora, a 501c3 non-profit
Distribution by County   11969    
Ranunculus aquatilis  L.  var. diffusus  With.
white water butter cup
Ranunculus aquatilis var. diffusus is a perennial herb (aquatic) that is native to California, and also found elsewhere in North America and beyond.
also called Ranunculus longirostris
Record Count by County

Alameda: 12 Lake: 6 Placer: 8 Sierra: 10
Alpine: 4 Lassen: 21 Plumas: 25 Siskiyou: 1
Amador: 1 Los Angeles: 2 Riverside: 12 Solano: 2
Butte: 16 Madera: 4 Sacramento: 5 Sonoma: 3
Calaveras: 5 Marin: 9 San Benito: 8 Stanislaus: 1
Colusa: 1 Mariposa: 6 San Bernardino: 12 Sutter: 2
Contra Costa: 8 Mendocino: 5 San Diego: 63 Tehama: 5
El Dorado: 9 Merced: 2 San Francisco: 1 Trinity: 1
Fresno: 20 Modoc: 1 San Luis Obispo: 18 Tulare: 16
Glenn: 2 Mono: 29 San Mateo: 6 Tuolumne: 2
Humboldt: 6 Monterey: 17 Santa Clara: 16 Ventura: 6
Inyo: 17 Napa: 6 Santa Cruz: 1 Yolo: 2
Kern: 11 Nevada: 11 Shasta: 9 Yuba: 2

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: https://www.calflora.org/   (Accessed: 11/21/2024).