Climbers, semiwoody or herbaceous. Branchlets terete, with longitudinal ridges, villous with brown segmented hairs; tendrils trifurcate. Leaves pedately 5-foliolate; stipules triangular-ovate, ca. 4 × 2 mm, herbaceous, sparsely pubescent, apex acuminate; petiole 4-9 cm; central petiolule 1-1.8 cm, petiolules of lateral leaflets absent or short, complex, 2-8 mm, villous with brown segmented hairs; leaflets elliptic or oblong, 3.5-11.5 × 2.5-6 cm, abaxially with sparse brown hairs, more densely so on veins, adaxially with sparse appressed hairs, then glabrescent, lateral veins 9-15 pairs, veinlets raised abaxially, inconspicuous adaxially, base cuneate, or nearly rounded on basal leaflets, margin 16-21-toothed on each side, teeth obtuse or acute, apex acute or mucronate. Corymbose polychasium axillary; peduncle 2.5-5.5 cm, villous with brown segmented hairs. Pedicel 1-2 mm, pilose. Buds oval, 1.5-2 mm, apex rounded. Calyx shallow and saucer-shaped, pilose, teeth inconspicuous. Petals oval or ovate-elliptic, 1-1.5 mm, pilose. Anthers oval. Lower part of ovary adnate to disk. Berry globose, ca. 1 cm in diam., 2-4-seeded. Seeds obovoid-triangular, base conspicuously rostrate, apex retuse, chalazal knot and raphe inconspicuous, ribs raised, ventral holes inconspicuous. Fl. May, fr. Aug.
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