Branchlets brown, terete; young branches slightly ridged; tendrils bifurcate. Leaves papery, palmately 5-foliolate; petiole 2.5-6 cm; leaflets lanceolate or obovate-lanceolate, 2.5-7 × 1.5-3 cm, abaxially usually glaucous, sometimes pubescent on veins, veinlets conspicuous but not raised, lateral veins 4-6 pairs, base cuneate, margin with 4-7 fine, sharp teeth on each side, apex acuminate or caudate-acuminate. Compound dichasium leaf-opposed. Petals (4 or)5, 3-3.5 mm. Stamens (4 or)5; filaments ca. 2.5 mm; anthers elliptic, ca. 1.5 mm. Pistil ca. 3 mm; style slender. Berry black-purple, 1-1.3 cm in diam. Seed 5-6 × ca. 4 mm, apex slightly retuse. Fl. Apr-Jun, fr. Jul-Oct.
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