Family: Papaveraceae
[Corydalis caseana var. cusickii (S. Watson) C.L. Hitchc., more... ]
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Stems 8-15 dm. Inflorescences not profusely branching. Flowers : outer petals with marginal wing strongly developed, distinctly revolute, not eroded, apex rounded, distinctly notched.
Flowering early-late summer. In and along streams; 1500-2300 m; Idaho, Oreg.