Erect annual herbs 15-40 cm tall; stems glabrous or nearly so. Principal leaves with blades narrowly lanceolate to ovate-lanceolate, marginally sinuate-serrate with 3-10 widely spaced teeth on each side, 0.5-2.5(-4.0) cm long, 5-8 mm wide, usually 3-6 times as long as wide. Inflorescences not secund, loosely few-to 20-flowered, the flowers appearing solitary in the axils of the upper leaves or bracts; pedicels slender, 2-6 mm long, varying from bristly to granular-roughened to nearly glabrous, basally bibracteolate with oblong to spatulate bracteoles 0.5-1 mm long. Flowers with the hypanthium glabrous, campanulate to somewhat ob-conical in anthesis; calyx lobes linear to lanceolate, entire, 2-3 mm long in flower and 5-6 mm long in fruit, glabrous to slightly granular; corolla 3-5 mm long, pinkish, glabrous, the tube ca. 2 mm long with the dorsal slit extending nearly to the base, nonfenestrate; filaments ca. 2 mm long, distally connate; anther tube 0.2-0.7(-1.0) mm long with a fringe of white bristles ca. 0.1 mm long at the apex of the 2 lowermost anthers, the anthers otherwise glabrous except for sparse, short pubescence on-the backs of the uppermost anthers. Capsules almost completely inferior, 5-6 mm long; seeds ellipsoid, smooth, shining.
Home