Spiranthes laciniata (Small) Ames
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Plants 2–10 dm; basal lvs narrow, to 30 cm, 3–10(–15) mm wide; cauline sheaths 4–6, the lower with well developed blade; infl 5–16 cm, its axis minutely glandular-hairy, the fls closely spaced in a single straight row or an evident spiral, spreading, urceolate-cylindric, 6–10 mm, mainly white; lip recurved-deflexed, with a yellow center, rather shallowly lacerate-fringed around the end, papillate on the lower surface, its basal callosities 0.7–1.5 mm, higher than thick. Open wet places on the coastal plain from N.J. to Fla. and Tex. July–Sept.