Stems erect or ascending, usually much-branched, 4–8 dm, glabrous to sparsely pubescent with erect or ascending hairs; petioles often nearly as long as the lfls; lfls elliptic, 1–4 cm, half as wide, appressed-hairy beneath, glabrous or nearly so above; racemes loose, few-fld, much exceeding the subtending lvs; fls purple, 6–10 mm, the wings shorter than the keel; cal-lobes 1.5–3 mm, the 2 uppermost connate beyond the middle; 2n=20. Dry upland woods; Mass. and Vt. to Wis., s. to Ga., Kans., and Tex., commonest in the Midwest. Aug., Sept. (L. prairea)
Home