Cypripedium reginae Walter. Section: Obtusipetala. Showy Lady's-slipper, Queen Lady's-slipper. Phen: May; Jun-Jul. Hab: Fens, seepage swamps, and mesic forests, over circumneutral to basic rocks. Dist: NL (Newfoundland), ON and SK south to NC (?), ne. TN, c. TN (Breeden 2018), n. AR, and e. ND. The native occurrence of this species in NC is questionable; the only definite specimen from the state is from an implausible habitat for the species (highly acid humus under rhododendron). Other rumors of occurrence in NC have not been substantiated. Likewise, with dubious records from GA: reported by a long-term resident of Rabun County to Wilbur Duncan, as having formerly occurred in Rabun Gap (Steve Bowling, pers.comm.). Also cited from Georgia by Fernald (1950), Gleason & Cronquist (1991), and Small (1903, 1933).

Origin/Endemic status: Native

Synonymy: = AqW, Ar, C, F, FNA26, G, Il, K1, K3, K4, Mi, Mo1, NE, NY, Pa, RAB, S, S13, Va, W, WV, Correll (1950), Luer (1975)

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Wetland Indicator Status:

• Eastern Mountains and Piedmont: FACW
• Great Plains: FACW
• Midwest: FACW
• Northcentral & Northeast: FACW

Heliophily ?: 4