Plants to 1 m, widely branched; stipules setaceous, deciduous; petioles 1-3 mm; lfls obovate from a cuneate base, 1-3(-4) cm, rounded to slightly retuse at the tip; racemes very numerous, terminating most of the branches; bracts setaceous, caducous; pedicels 3-6 mm; fls yellow, 8-13(-16) mm; cal glabrous; pods thick-lenticular to subglobose, 8-15 נ6-8 mm; stipe 5-10 mm; 2n=18. Dry sterile or sandy soil; s. Me. to Ga. and Tenn., w. occasionally to s. Ont., Mich., Ind., Ill., and (only intr.?) to Wis. and Minn. June, July. A hybrid with no. 3 [Baptisia lactea (Raf.) Thieret] is B. ؤeamii Larisey; one with no. 4 [Baptisia alba (L.) R. Br.] is B. ذinetorum Larisey.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.