Lianas, woody. Branchlets terete, with longitudinal ridges, with dense curly ferruginous hirsute hairs. Leaves pedately 5-foliolate, rarely 3-foliolate; petiole 10-11 cm; central petiolule 1.5-1.8 cm, lateral petiolules very short or lateral leaflets subsessile, densely hirsute with curly hairs; leaflets oblanceolate or obovate-lanceolate, 9-13 × 3-4.5 cm, abaxially densely hirsute or at least on veins with curly ferruginous hairs, adaxially nearly glabrous, lateral veins 9-11 pairs, veinlets inconspicuous, base cuneate or broadly so, base of lateral leaflets asymmetric, subrounded, margin with 21-31 sharp teeth on each side, apex acuminate. Inflorescence umbelliform, axillary, 2-3 cm at fruiting stage, articulate at lower part and with bracts at nodes; peduncle ca. 1.2 cm, pubescent. Pedicel ca. 1.2 mm, pubescent. Buds ca. 1.5 mm, apex rounded and obtuse. Calyx saucer-shaped, pubescent, teeth 4. Petals ovate-elliptic, ca. 1.2 mm, apex corniculate, papillose. Disk inconspicuous and annular in female flowers. Lower part of ovary adnate to disk; style conspicuous; stigma 4-lobed. Berry globose, ca. 1 cm in diam., 3-seeded. Seed elliptic, base with very short rostrum, apex subrounded, chalazal knot inconspicuous, upper raphe slightly raised, surface smooth, ventral mid-raphe obviously raised, holes inconspicuous. Fl. Apr, fr. May.
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