Stems slender, erect from a cluster of fibrous roots, 2-5 dm, simple to the infl, pubescent in lines; lvs very numerous in whorls of 3-6, narrowly linear, 2-5 cm נ1-2 mm, revolute; umbels several from the upper nodes; peduncles 1-3 cm; fls white or greenish; cor-lobes 4-5 mm; hoods somewhat divergent, 1.5-2 mm, about equaling the gynostegium, their margins entire; horns subulate, much surpassing the hoods, inflexed over the gynostegium; fr slender, erect on erect pedicels, 7-10 cm; 2n=22. Fields, roadsides, upland woods, and prairies; Mass. to Fla., w. to Sask., Kans., and Ariz. June-Aug.
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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