Cypripedium acaule Aiton. Section: Acaulia. Phen: Apr-Jun; Aug. Hab: Dry to mesic, acid forests and woodlands, often under pine, other conifers, and/or oaks. Dist: NL (Newfoundland) west to n. AB, south to NC, SC, GA, TN, n. IN, and MN.
Origin/Endemic status: Native
Synonymy: = C, F, FNA26, G, Il, K1, K3, K4, Mi, NE, NY, Pa, RAB, Tn, Va, W, WV, Correll (1950), Luer (1975); = Fissipes acaulis (Aiton) Small – S