Lianas, woody. Branchlets terete, with longitudinal ridges and conspicuous lenticels, glabrous. Leaves pedately 5-foliolate; petiole 4-8 cm; central petiolule 1-2.5 cm, petiolules of lateral leaflet complex 0.7-2 cm, lateral petiolules 4-10 mm, glabrous; leaflets obovate-elliptic or elliptic, 4-16 × 2.5-6 cm, glabrous, lateral veins 6 or 7 pairs, veinlets inconspicuously raised, base rounded or broadly cuneate, base of lateral leaflets asymmetric, margin with undulate teeth, apex acute or cuspidate. Compound dichasium axillary, loosely arranged; peduncle 2-3 cm, pubescent or glabrous. Pedicel 3-4 mm, pubescent. Buds ovoid-elliptic, 2-3 mm, apex obtuse. Calyx cupular, pubescent, margin undulate, teeth inconspicuous. Petals elliptic, 1.8-2.8 mm, apex galeate, pubescent. Disk inconspicuous in female flowers. Ovary coniform, pubescent; style short; stigma deeply 4-lobed. Berry spheroid, 1-1.3 cm in diam., 1-or 2-seeded. Seeds obtriangular, base gradually tapering, apex retuse, rostrum sharp. Fl. Apr-May, fr. Jun-Oct.
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