Lianas, woody. Branchlets terete, with longitudinal ridges, densely pubescent; tendrils bifurcate. Leaves 3-foliolate; stipules caducous; petiole 8.5-16 cm; central petiolule 6-7 cm, lateral petiolules 2-3.5 cm, densely pubescent; leaflets abaxially densely pubescent or glabrescent, adaxially nearly glabrous, lateral veins 9-12 pairs, veinlets inconspicuously raised; central leaflet obovate-elliptic; lateral leaflets broadly elliptic or rhombic-elliptic, 12-25 × 8-16 cm, base slightly cordate, margin entire or slightly serrate, apex acute or acuminate. Corymbose polychasium axillary; peduncle ca. 11 cm, with nodes at middle. Pedicel 1-2.5 mm, with dense gray hairs. Buds oval or globose, 2-2.5 mm, apex rounded. Calyx saucer-shaped, glabrous, margin undulate. Petals oval, 1.8-2.3 mm, glabrous. Anthers oval. Stigma slightly expanded. Berry ca. 1.3 cm in diam. Seeds semiglobose, base rostrate, apex rounded, ventral holes elliptic, 5-6 × ca. 4 mm, enveloped by a membrane. Fl. Jun, fr. Oct-Jan of following year.
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