Simple or branched annual, 1-4 dm; basal lvs narrowly elliptic to spatulate or obovate, obtuse, 1-3 cm, generally withering after anthesis, the cauline ones progressively narrower, becoming linear-oblong or linear; infl 5-15 cm wide, the racemes numerous, rather loose, 8-10 mm thick; pedicels 1-2 mm; fls yellow, drying dark green; wings acuminate, 3 mm, about equaling the cor; fr suborbicular; seeds finely pubescent; 2n=64. Pine-barren swamps on the coastal plain; s. N.J. to Fla. and Tex. June-Aug. (Pilostaxis r.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.