Description from Flora of China
Shrubs evergreen, dioecious, much branched, usually climbing on trees, rarely small trees to 1.5 m tall. Branchlets smooth, glabrous, unarmed. Buds ovoid to narrowly so, apex acute to shortly acuminate; scales brown, ovate, glabrous or margin ciliate. Leaves 2-4-clustered at branchlet apex; petiole robust, 7-18 mm, remotely glandular hairy; leaf blade ovate to ovate-oblong or elliptic, 5-10 × 2.5-4.5 cm, leathery, glabrous, 3-5-veined, base broadly cuneate to rounded, margin unlobed, coarsely sharply serrate, apex acute. Male racemes pendulous, 3-6 cm, up to 12-flowered, female ones erect, nodding in fruit, 2-3 cm; rachis pubescent and often shortly stalked glandular; bracts greenish, oblong, 10-12 mm, 1-veined, margin sparsely glandular hairy. Male flowers 10-12 mm in diam., female ones 6-8 mm in diam.; pedicel 3-7 mm, pubescent or glabrous. Calyx yellowish green, pubescent or glabrous; tube cupular; lobes broadly oblong to suborbicular, ca. 4 mm. Petals cuneate-spatulate, ca. 2 mm. Stamens subequaling petals. Ovary oblong, pubescent or glabrous. Style 2-lobed. Fruit purple, ellipsoid to oblong, 1.5-2 × 0.7-1 cm, pubescent or glabrous. Fl. Apr-Jun, fr. Aug-Oct.
* Forests, slopes, river banks, rocks; 2100-3600 m. Guizhou, W Sichuan, Yunnan.