Similar species: see page for species

Author: The Field Museum

Stem 4-10 dm; lower 1-3 lvs linear or lance-linear, to 20 נ2 cm; upper several lvs much reduced; infl compact, ovoid, 5-15 נ4-5 cm; fls white; sep subrotund or broadly ovate, 5-11 mm, the lateral ones inequilateral, reflexed against the ovary; lateral pet shorter than the sep, linear-oblong, erose or lacerate at the summit; body of the lip narrowly oblanceolate, 8-11 mm, fringed except at the slender, claw-like base; spur slender and elongate; 2n=42. Acid swamps and bogs; Nf. and Ont. to Mich., s. to Fla. and Tex., but missing from most of the Ohio drainage. July, Aug. (Blephariglottis b.; B. albiflora; Platanthera b.) Two geographic vars..

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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