Herbage persistently yellow-green; stems 2-6 dm, glabrous or nearly so, with stiffly ascending branches; lvs linear or widened distally, obtuse to acute or acuminate; pedicels 5-15 mm at anthesis, ascending at 30-60ڻ cal-tube 1.8-3 mm, reticulate-veiny, the lobes thickened, narrow, minutely hairy, projecting 0.1-0.4 mm; cor 1-1.5 cm, pink, with or without yellow lines and red-purple spots in the throat, the lobes rounded, sometimes emarginate so that the cor appears 10- lobed; pollen-sacs 1.2-2.1 mm; fr ellipsoid-globose, 3-5 mm; seeds yellow-brown; 2n=26. Dry, open places, usually in sandy soil; Pa. and Del. to Fla. and La., and inland to Ky. and Tenn. (Gerardia o.; G. decemloba; G. parvifolia; ? G. erecta)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.