[Cinquefoils: The Genus Potentilla East of the Cascade Mountains of Oregon and Washington]

Biennial Cinquefoil

Potentilla biennis

Synonyms: Potentilla kelseyi, Potentilla lateriflora, Tridophyllum bienne

Biennial Cinquefoil: Potentilla biennis (Synonyms: Potentilla kelseyi, Potentilla lateriflora, Tridophyllum bienne)

Biennial cinquefoil blooming along lower Arizona Creek at the eastern base of the Pueblo Mountains of southeastern Oregon..............June 1, 2012.

Trifoliate leaf of Biennial Cinquefoil: Potentilla biennis (Synonyms: Potentilla kelseyi, Potentilla lateriflora, Tridophyllum bienne)

A close-up image of a trifoliate leaf of biennial cinquefoil as seen along Whitehorse Ranch Road in the Alvord Desert of southeastern Oregon............June 1, 2012.

Paul Slichter