Slender, (1-)2-4 dm; cauline lf lanceolate or narrowly elliptic, 3-9 נ1-2.5 cm; bracteal lf similar but smaller; sep and lateral pet rose-pink to seldom white, 17-22 mm; sep lanceolate, widely spread, the dorsal one nearly erect; lateral pet elliptic, hovering over the column; lip about as long as the sep, usually pink, veined with red, bearded with yellow hairs; 2n=18. Open, wet meadows and sphagnum-bogs; Nf. to Minn., s. to Fla. and Tex. May-July.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.