Usually simple, 5-12 dm, with several pairs of lvs and 1-few small terminal umbels; lvs sessile or nearly so, lanceolate or lance-ovate, 8-12 cm, acuminate, rounded at base, minutely scabrellate near the margin above, otherwise glabrous; cor red, its lobes 8-10 mm; hoods slender, erect, red or orange-red, 6-8 mm, the lateral margins with an obscure lobe near the base; horn subulate, nearly erect, almost equaling the hood and at base scarcely adnate to it; fr 8-10 cm, erect on deflexed pedicels. Swamps, bogs, and wet woods on or near the coastal plain; L.I. and N.J. to Tex. June, July.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.