Stems solitary from slender rhizomes, 3-7 dm, puberulent in lines with ascending hairs, or sometimes glabrous; petioles 0.5-2.5 cm; lvs thin, pinnately veined, ovate or lance- ovate, with broadly rounded or subcordate base, toothed, 3-8 נ1.5-5 cm; racemes mostly axillary or on axillary branches, 3-10 cm, bracteate but scarcely leafy except sometimes near the base; cal 1.5-2.5 mm; cor blue (pink or white), 5-8 mm, the short galea evidently surpassed by the lower lip; 2n=88. Moist bottomlands; Nf. to B.C., s. to Ga. and Calif. July-Sept.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.