Erect annual, simple or branched above, 1-4 dm; lvs linear to linear-oblong or narrowly oblanceolate, 1-2 cm נ1-4 mm; peduncles well developed; bracts lanceolate, persisting after anthesis on the elongating axis; racemes dense, cylindric, blunt or apiculate (by the young buds), 1-2 cm נ8-13 mm, or the whole axis to 4 cm; fls rose-purple; wings obovate-oblong, tapering to the base, 3-5 mm, a third as wide, exceeding the cor; aril a third as long as the hairy seed; 2n=40. Dry sandy soil; Del. to O., s. to S.C. and Miss. June-Sept.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
