Spiranthes cernua (Linnaeus) L.C. Richard. Nodding Ladies'-tresses. Phen: Jul-Nov; Aug-Nov. Hab: Bogs, swamps, ditches, usually in acidic, sphagnous situations. Dist: NS west to s. OH, MO, and OK, south to Panhandle FL and c. TX.

Origin/Endemic status: Native

Synonymy: = AqW, K4, Hough & Young (2021), Pace & Cameron (2017); < Gyrostachys cernua (L.) Kuntze; < Ibidium cernuum (L.) House – S, S13; < Spiranthes cernua (L.) Rich. – G, Il, K1, K3, Mo1, NcTx, NY, Pa, Tat, Tn, Va, W, WH3, WV; >< Spiranthes cernua (L.) Rich. – FNA26; < Spiranthes cernua (L.) Rich. var. cernua – C, F, GW1, RAB, Luer (1975); >< Spiranthes cernua (L.) Rich. var. cernua – ETx1, Tx, Correll (1950); > Spiranthes parksii Correll – ETx1, FNA26, Tx, Correll (1950), Hough & Young (2021), Luer (1972)

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
• Great Plains: FACW (taxonomic split from wetland indicator species)
• Midwest: FACW (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FACW (taxonomic split from wetland indicator species)

Heliophily: 7