Branchlets terete or with conspicuous longitudinal ridges, pubescent when young, later glabrescent; tendrils 5-10-branched, with young apex expanded as tubercles. Leaves palmately 5-foliolate; petiole 2-6 cm, pubescent; leaflets with short petiole or nearly sessile, obovate-elliptic or obovate-lanceolate, 2-12 × 1-5 cm, abaxially pubescent on veins, adaxially conspicuously bullate, lateral veins 4-9 pairs, veinlets slightly raised abaxially, inconspicuous adaxially, base cuneate, margin 5-12-toothed, apex acute or acuminate. Paniculate polychasium pseudoterminal, 6-15 cm, usually with obvious rachis and degenerative leaflets; peduncle 0.5-4 cm, pubescent. Pedicel 2-3 mm, glabrous. Buds elliptic or slightly obovoid-elliptic, 2-3 mm, apex rounded. Calyx entire. Petals elliptic, 1.6-2.6 mm, glabrous. Filaments 1.4-2.4 mm, base slightly broad; anthers elliptic, 1.6-2.6 mm. Disk inconspicuous. Ovary globose; style conspicuous, base slightly enlarged; stigma inconspicuously expanded. Berry 6-8 mm in diam., 1-4-seeded. Seeds obovoid, base tapering into a short rostrum, apex rounded. Fl. Jul-Aug, fr. Sep-Nov.
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