Spiranthes tuberosa Rafinesque. Little Ladies'-tresses, Little Pearl-twist. Phen: Jun-Sep. Hab: In a wide variety of habitats, especially relatively well-drained woodlands and fields, longleaf pine sandhills, dry hammocks, dry pine flatwoods. Dist: MA, OH, and MO south to c. peninsular FL and TX.

Origin/Endemic status: Native

Synonymy: = Ar, C, ETx1, FNA26, G, Il, K1, K3, K4, Mi, Mo1, NcTx, NE, NY, Pa, Tn, Va, W, WH3, WV, Brown (2002), Luer (1975); = Ibidium beckii (Lindl.) House – S, misapplied; > Spiranthes grayi Ames – RAB, Tx, Correll (1950), Luer (1972); > Spiranthes tuberosa Raf. var. grayi (Ames) Fernald – F; > Spiranthes tuberosa Raf. var. tuberosa – F

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