Shrubs or herbs, erect, large, perhaps annual, sparsely pubescent, glabrescent. Stems and branches thick, much reflexed. Petiole 1-3 cm; leaf blade ovate or broadly elliptic, 3-14 × 2-6 cm, glabrescent, base rounded or broadly cuneate, decurrent, sometimes oblique, margin with a few coarse teeth, rarely entire, apex short acuminate. Pedicel 5-10 mm. Calyx broadly campanulate, 2-3 mm, basally rounded; lobes deltate, ca. 0.5 mm, ciliate, abaxially spiny. Corolla white, with 5 2-part markings abaxially, campanulate-rotate; lobes ovate, slightly longer than tube, 2-3 mm, spreading, ciliolate. Stamens inserted in tube, erect, included or slightly exserted, 6-7 mm; filaments 5-6 mm; anther ovoid, ca. 1 mm. Ovary ovoid, glabrous. Style erect, as long as stamens. Fruiting pedicel 1.5-1.8 cm, nodding; fruiting calyx much inflated, globose-ovoid, ca. 1.8 × 1.5 cm, with longitudinal winglike ribs and prominent deltate teeth on ribs. Berry globose, much smaller than fruiting calyx, 8-12 × 8-10 mm. Seeds pale yellow, discoid, ca. 1 mm in diam. Fl. Jul-Sep, fr. Aug-Nov.
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