Viola retusa Greene. Section: Nosphinium. Subsection: Borealiamericanae. Great Plains Violet. Phen: Apr-May. Hab: Gravel riverbanks along rivers and streams, sometimes under open woods bordering riverbanks, in the Great Plains. Dist: N. ND to n. WY, south to e. KS, c. TX and nc. CO.
Origin/Endemic status: Native
Syn: < Viola nephrophylla – K4