Taxon  Report   11969    
Ranunculus aquatilis  L.  var. diffusus  With.
white water butter cup
Ranunculus aquatilis var. diffusus, a dicot, is a perennial herb (aquatic) that is native to California, and also found elsewhere in North America and beyond.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial

Bloom Period

Toxicity: MINOR, DERMATITIS Wetlands: Occurs in wetlands
Name Status:
Accepted by JEF

Alternate Names:
JEFRanunculus aquatilis var. capillaceus
JEFRanunculus aquatilis var. harrisii
JEFRanunculus aquatilis var. longirostris
JEFRanunculus aquatilis var. subrigidus
JEFRanunculus circinatus var. subrigidus
More information about  Ranunculus aquatilis var. diffusus
International Plants Names Index

Search (Flora of North America)

Landscape information from Calscape

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Consortium of California Herbaria 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]. 2021. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 08/05/2021).