Vines twining, 1-8 m. Branchlets terete, densely rusty villous. Leaves opposite, 3-foliolate; petiole 0.5-3.5 cm; leaflet blade ovate to ovate-lanceolate, rarely suborbicular or elliptic, papery, rusty pubescent and more densely so along veins abaxially, base rounded or rounded-cuneate, apex obtuse, acute, to acuminate, primary veins 3-6 on each side of midrib; terminal leaflet 3-12.5 × 2-8 cm, petiolule 0.8-3 cm; lateral leaflets 1.5-6.5 × 0.8-5 cm, petiolule 1-6 mm. Cymes terminal or axillary, many-flowered congested panicles, rarely 1-flowered in leaf axils. Flowers heterostylous. Pedicel 0-5 mm. Calyx pilose; lobes linear, 1-5 mm, slightly enlarged in fruit. Corolla white or yellowish, salverform; tube 1.5-4 cm; lobes 5, oblong or lanceolate, 0.6-1.4 cm. Berry black, globose or subglobose, 0.8-1.7 cm × 6-10 mm. Fl. Jun-Oct, fr. Sep-May.
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