Branchlets terete, with longitudinal ridges; tendrils 2- or 3-branched. Leaves palmately 5-foliolate; stipules brownish, ovate-lanceolate, ca. 2.3 × 1-2 mm, membranous, glabrous or sparsely pubescent, apex obtuse; petiole 1.5-2.5 cm, glabrous or sparsely pubescent; leaflets nearly sessile; leaf blade lanceolate or rhombic-lanceolate, 4-9 × 1.5-6 cm, lateral veins 3-6 pairs, veinlets inconspicuous, base cuneate, apex acuminate. Compound corymbose dichasium, usually leaf-opposed or pseudoterminal; peduncle 1.5-4 cm, glabrous or sparsely pubescent. Pedicel 1-2.5 mm, nearly glabrous. Buds ovoid, 2-3 mm, apex rounded. Calyx glabrous. Petals oval, 1.7-2.7 mm, glabrous. Anthers oval. Lower part of ovary adnate to disk; style conical. Berry globose, 6-8 mm in diam., 2- or 3-seeded. Seeds obovoid, chalazal knot rounded, raphe attenuate, ventral holes furrowed upward 1/3 from base. Fl. May-Aug, fr. Jul-Sep.