Spiranthes bightensis M.C. Pace. Common name: Atlantic Ladies'-tresses. Phenology: Late Sep-early Nov. Habitat: Maritime grasslands, dune swales, sphagnous lake and pond margins. Distribution: Long Island, NY, south to VA (eastern shore).

Origin/Endemic status: Endemic

Taxonomy Comments: See Pace (2021) for detailed discussion. S. bightensis is derived from ancestral hybridization of S. cernua × odorata and is now a lineage independent from both original parents. The cultivar 'Chadds Ford' is this species.

Synonymy ⓘ: = NS, POWO, Hough & Young (2021), Pace (2021); = n/a — K4; < Spiranthes cernua (L.) Rich. — Tat; < Spiranthes cernua (L.) Rich. var. odorata (Nutt.) Correll — C; < Spiranthes odorata (Nutt.) Lindl. — FNA26. Basionym: Spiranthes bightensis M.C.Pace 2021

Links to other floras: < Spiranthes odorata - FNA26

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
• Great Plains: OBL (taxonomic split from wetland indicator species)
• Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily ⓘ: 9