Weak herbs, 30-40 cm tall; stems angled to subterete, densely puberulent or villosulous-tomententulose to glabrescent. Leaves subequal to distinctly unequal, varied along stems; petiole 5-15 mm, densely villosulous; blade drying thinly papery and olive-green, elliptic-oblong, elliptic, elliptic-ovate, or obovate, larger blades 4-9 × 2-4 cm, smallest blades 1.5-2 × 0.8-1 cm, adaxially glabrous, abaxially glabrescent on lamina and villosulous to strigillose-villous along principal veins, base cuneate, obtuse, or rounded, apex acute to obtuse and shortly acuminate; secondary veins 5-8 pairs; stipules leaflike, shortly stipitate with "blade portion" subovate to obovate or subreniform, (1-)2.5-5 mm, glabrescent, obtuse to rounded. Inflorescences congested-cymose, terminal and/or pseudoaxillary, several flowered, densely puberulent-tomentulose to strigillose; peduncle 2-5 mm; bracts lanceolate to narrowly triangular, 1-2 mm; pedicels to 1.5 mm. Flowers free, subsessile to pedicellate. Calyx puberulent-hispidulous; hypanthium portion obovoid, 1-1.5 mm; limb lobed nearly to base; lobes lanceolate to narrowly triangular, 1.7-2(-2.5) mm, entire to ciliolate. Corolla yellow, white, or pink, tubular-salverform, densely hispidulous-puberulent with stout trichomes outside; tube 2-2.5 mm, internally with ring of trichomes near middle; lobes triangular, ca. 2 mm, abaxially appendaged near apex. Capsules obconical-subglobose, ca. 3 mm, glabrescent to puberulent, with persistent calyx limbs sometimes elongating to 3 mm; seeds 0.4-0.5 mm. Fl. Aug, fr. May.
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