logo Calflora, a 501c3 non-profit
Taxon  Report  
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
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 graphic
Bloom Period
Parent: Ranunculus aquatilis
Genus: Ranunculus
Family: Ranunculaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

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
...
Information about  Ranunculus aquatilis var. diffusus from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (RATRT)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net


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]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/29/2023).