Climbing shrubs, large, deciduous. Branchlets glabrous, lenticels numerous, conspicuous; pith brown, solid. Petiole 4-5 cm, glabrous; leaf blade adaxially dark green, ovate or oblong-ovate to rhombic-suborbicular, 6-14 × 4-8 cm, thinly leathery, both surfaces glabrous, veins conspicuous abaxially, lateral veins 6 or 7 pairs, reticulate veins dense and conspicuous with distinct and raised parallel cross-bars, base obtuse to rounded, oblique, margin callose-crenate-serrate, apex acute or obtuse. Female inflorescences 3-5-flowered, umbelliform, all pedicels crowded on peduncles; peduncles 2-2.5 cm; pedicels ca. 1 cm, both surfaces slightly rusty tomentose; bracts subulate, ca. 3 mm. Flowers unknown. Fruit ovoid, 1.5-2.2 cm, glabrous, lenticels brownish, apex rounded; persistent sepals densely velutinous. Seeds 1.5-2 mm. Fl. May, fr. Nov.

● Mixed forests; 1800-2000 m. Yunnan.