Plants 30-50 cm tall. Roots numerous, clustered. Stems pubescent, glabrescent. Petiole 0.5-2.5 cm; leaf blade usually broadly ovate, 5-13 × 4-7 cm, pubescent, base cuneate, apex acute. Inflorescences usually paired flowers in leaf axils, branch forks, or branch axils. Pedicel 1-1.5 cm, densely pubescent, nodding. Calyx short campanulate, half as long as corolla, ca. 7 × 7 mm, divided halfway; lobes erect, unequal, longest oblong, shorter ones narrowly deltate or lanceolate, ciliate. Corolla white, campanulate, ca. 1 × 1 cm; lobes broadly deltate, ciliate. Stamens more than half corolla length; filaments ca. 4 mm, glabrous; anthers ca. 2 mm. Fruiting pedicel 2-2.5 cm. Fruiting calyx ovoid-globose, ca. 2.5 × 1.8 cm, enveloping and longer than berry, open at apex; lobes 0.7-1.4 cm. Berry globose, ca. 1.6 cm in diam. Seeds subdiscoid. Fl. May-Jun, fr. Jul-Aug.
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