Fls smaller, the lateral pet mostly 8-11 נ4.5-7 mm, the lip 15-21 mm, the spur 30-40 mm; column comparatively small and rounded, the pollinaria closely spaced, their caudicles parallel, the viscidia directly below the pollinia; mainly eastern, extending w. to Ill., Wis., se. Io., and rarely to e. Kans. and e. Okla. (Blephariglottis l.; Platanthera l.)

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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