Cypripedium parviflorum Salisbury var. pubescens (Willdenow) Knight. Section: Cypripedium. Large Yellow Lady's-slipper, Whippoorwill Shoes. Phen: Apr-Jun; Jul-Aug. Hab: Rich mesic forests. Dist: NL (Labrador) and AK south to GA, AL, MS, NM, and AZ.
Origin/Endemic status: Native
Synonymy: = Ar, FNA26, Il, K3, K4, Mi, NE, NY, Pa, Va, Sheviak (1994), Wallace & Case (2000); = Cypripedium calceolus var. pubescens (Willd.) Knight – C, Mo1, Tx, W, Luer (1975); = Cypripedium pubescens Willd. – K1, S, S13, Tn, WV; < Cypripedium calceolus var. pubescens (Willd.) Knight – F, G, RAB, Tat, Correll (1950); < Cypripedium parviflorum Salisb. var. pubescens (Willd.) Knight – AqW
Heliophily ?: 3
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