Vines, herbaceous. Branchlets terete, with longitudinal ridges; tendrils 2- or 3-furcate. Leaves pedately 5-foliolate, or sometimes 3-foliolate; stipules caducous; petiole 1.5-10 cm; central petiolule 0.5-2.5 cm, lateral petiolules short or lateral leaflets sessile, petiolules of lateral leaflet complex 0.5-1.5 cm; leaflets with lateral veins 5-9 pairs, veinlets inconspicuous; central leaflet elliptic or elliptic-lanceolate, 2.5-14.5 × 1.5-4.5 cm, base cuneate, apex acute or acuminate; lateral leaflets elliptic or narrowly so, 1-7 × 0.5-3.5 cm, base cuneate or subrounded, margin 6-15-toothed on each side, apex acute or rounded. Compound dichasium axillary; peduncle 1-13 cm. Pedicel 1-2 mm. Buds oval, 1-2 mm, apex rounded. Calyx cupular, papillose or nearly glabrous, margin entire or undulate. Petals triangular-oval, 1-1.5 mm, papillose. Anthers oval. Lower part of ovary adnate to disk. Berry globose, ca. 1 cm in diam., 2-4-seeded. Seeds triangular-obovoid, base rostrate, apex retuse, surface with ribs, ventral holes semicircular, extending from base to near apex.