Cypripedium acaule Aiton. Section: Acaulia. Pink Lady's-slipper, Moccasin-flower. 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, n. AL, TN, n. IN, and MN.

Origin/Endemic status: Native

Synonymy: = AqW, C, F, FNA26, G, Il, K1, K3, K4, Mi, NE, NY, Pa, RAB, Tat, Tn, Va, W, WV, Correll (1950), Luer (1975); = Fissipes acaulis (Aiton) Small – S, S13

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACU
• Eastern Mountains and Piedmont: FACU
• Great Plains: FACW
• Midwest: FACW
• Northcentral & Northeast: FACW

Heliophily ?: 4