Branchlets terete, slender, with thin longitudinal ridges, with sparse arachnoid tomentum when young, eventually subglabrate; tendrils bifurcate, leaf-opposed. Leaves simple, 3-5-lobed to parted, usually mixed with undivided leaves; petiole 2-4 cm, sparsely pubescent; leaf blade ovate or ovate-pentagonal, 3-6 × 3-5 cm, both surfaces with sparse very short fine hairs and midvein with fine stiff hairs, basal veins 5, lateral veins 3-5 pairs, veinlets slightly raised abaxially, base cordate, notch rounded to acute, teeth obtuse, apex acute or acuminate; midlobes rhombic-ovate, base constricted, notch rounded. Panicle 3.5-8 cm, glabrous or subglabrate; peduncle 1-3 cm; bract narrowly triangular, margin ciliate, then cilia falling off. Pedicel 2-3 mm, glabrous. Berry globose, 6-8 mm in diam.
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