Spiranthes sheviakii M. Hough & M.A. Young. Old Field Ladies'-tresses. Hab: Acidic, dry-mesic successional habitats, old fields, barrens, thickets, dry-open woodland bluffs, ravine-rims. Dist: C. NY and s. ON west to sw. MI and ne. IL, south to n. AK, east to KY/TN and s. OH.
ID notes: Spiranthes sheviakii differs from S. cernua in having a centrally yellowed lip (vs. white) and spherical (vs. conical/flattened) abaxial glands. It can be distinguished from S. xkapnosperia and S. ochroleuca by its straight lateral sepals that frequently curve inward apically (vs. straight to somewhat falcate and not curved apically).
Origin/Endemic status: Native
Syn: = Hough & Young (2021)