Evergreen woody climbers to 30 m. Young branchlets densely pubescent, glabrescent. Petiole 1-1.5 cm, pubescent; leaf blade ovate or obovate, 4-10 × 2.5-5 cm, leathery, scabrous, abaxially brown hispid, scaberulose, adaxially sparsely setose, with strumose protuberance, secondary veins 9-12, approximately parallel, obviously prominent on abaxial surface, slightly depressed on adaxial surface, veinlets unclear, base rounded, often oblique, apex rounded or obtuse, sometimes slightly acute. Panicles terminal, 10-20 cm, many flowered; peduncle and pedicels pubescent; bracts lanceolate, 4-6 mm, hairy; bractlets linear-lanceolate, 2-3 mm, hairy. Flowers 6-8 mm in diam. Sepals 4 or 5, ovate, 3-4 mm, abaxially pubescent, persistent in fruit, slightly curved, apex rounded. Petals 3, white, slightly longer than sepals, deciduous. Stamens numerous, as long as sepals. Carpels 1(or 2), densely gray pubescent; ovules several. Follicles ovate, ca. 1 cm, apex with persistent bent beaklike style, ± pubescent. Seeds 1 or 2, 3-4 mm; aril fringed, enclosing base of seeds.