Stems 2-5 dm, with a few stiffly ascending branches, strongly striate-angled or narrowly 4-winged, usually somewhat scabrous on the angles; herbage persistently yellow-green; pedicels 1-2 times as long as the bracts, ascending at usually 20-30л cal-tube 2.5-3 mm, reticulate-veiny, the lobes broadly triangular, 0.7-1 mm; cor 1-1.5 cm, pink, with 2 yellow lines and some purple spots in the throat, the lobes ±truncate; pollen-sacs 0.5-1.3 mm; fr subglobose, 4-5 mm; seeds yellow-brown; 2n=26. Dry prairies, open woods, and barrens, especially in sandy soil; sw. Ont. to O., Wis., Mo., and Kans., rare. (Gerardia s.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.