Ranunculus rhomboideus Goldie
Common Name: PRAIRIE BUTTERCUP
Coefficient of Conservatism: 9
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt P-Forb
Status: T
Ranunculus rhomboideus D. R. Gregory

Sandy banks and grasslands, very local in southern Michigan; also on rocky ridges (generally south-facing) in the western Upper Peninsula and Isle Royale.

A prairie species, rare this far east, and often occuurring in isolated colonies or groups of colonies widely separated from other occurrences. Ranunculus rhomboideus has simple basal leaves, like R. abortivus, but differs from that species by the larger petals and conspicuously villous stems and petioles.

Locations

Gogebic County
Ionia County
Kent County
Keweenaw County
    Only on Isle Royale
Montcalm County
Ontonagon County
St. Clair County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 10, 2017. http://michiganflora.net/species.aspx?id=2398.