Ranunculus acriformis aestivalis L.D.Benson (1948:43)

Fall buttercup, Autumn buttercup




Taxonomy & Nomenclature

Synonyms: Ranunculus acris var. aestivalis (L.D.Benson) S.L.Welsh in Great Basin Naturalist 46: 260 (1986); Ranunculus aestivalis (L.D.Benson) Van Buren & K.T.Harper in Amer. J. Bot. 81: 518 (1994)


Conservation Status

Last record: 29 August 1948 (Welsh et al., 1975:367)

Rediscovered on 23 August 1982 by Kathryn Mutz (USFWS, 1991:1)



Garfield County, Utah, USA


Biology & Ecology










Flora of North America Editorial Committee. (1997). Flora of North America North of Mexico 3: 1-590. Oxford University Press, New York, Oxford.

Ripley, L. (1975). Report on endangered and threatened species of the United States. House Document 94-51: 1-200.

Tilley, D., St. John, L. and Ogle, D. (2010). Plant guide for autumn buttercup (Ranunculus aestivalis). USDA-Natural Resources Conservation Service, Idaho Plant Materials Center. Aberdeen, ID.

USFWS (U.S. Fish and Wildlife Service). (1991). Autumn buttercup (Ranunculus acriformis var. aestivalis) Recovery Plan. U.S. Fish and Wildlife Service, Denver, Colorado. 20 pp.

Welsh, Stanley, Atwood, N. Duane and Reveal, James L. (1975). Endangered, threatened, extinct, endemic, and rare or restricted Utah vascular plants. Great Basin Naturalist 35(4): 327-376.


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