Herbs or subshrubs, to 50 cm tall; stems terete, puberulent. Leaves petiolate; petiole 4-8 mm, puberulent; blade drying submembranous, ovate or elliptic-oblong, 4.5-5 × 0.7-2.5 cm, adaxially glabrous, abaxially glabrous or farinose pubescent, base cuneate or decurrent, apex acute or weakly acuminate; secondary veins ca. 3 pairs but indistinct; stipules ovate or lanceolate, 2-5 mm, marginally glandular-serrulate, long acuminate. Inflorescences terminal, cymose to paniculate, 1.5-4 × 2-4.5 cm; axes dichotomous to subumbelliform; bracts subulate, ca. 2 mm; pedicels ca. 1 mm. Flowers pedicellate. Calyx puberulent; hypanthium portion obovoid, ca. 1 mm; lobes lanceolate to narrowly triangular, 1.5-2.5 mm. Corolla purple, tubular-salverform, outside glabrous; tube ca. 6 mm, bearded in throat; lobes obovate to triangular, 1-1.2 mm. Anthers included. Fruit capsular, subglobose or obovate, ca. 2 × 1.5 mm, puberulent or subglabrous, dehiscent; seeds 2-4, black, angled. Fl. Apr-Jun.
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