Lianas to 10 m or more tall. Branchlets densely pilose. Petiole 8-12 mm, densely pilose; leaf blade green adaxially, 5-15 × 3-7 cm, leathery, abaxially densely dark scaly and pilose, adaxially glabrescent but persistently pilose on midvein and lateral veins; lateral veins in 5-8(-10) pairs. Panicles to 30 cm or more; peduncle and rachis densely pilose; bracts 2-3 mm, densely pilose. Calyx tube 7-10 mm at anthesis, abaxially densely pilose; lobes 2-3.5 mm at anthesis, both surfaces densely pilose. Filaments 2-3 mm. Fruit 18-23 mm including calyx lobes, densely pilose; persistent calyx lobes 10-14 mm, longitudinally 3-veined with reticulate veins between, both surfaces pilose, especially on veins, or glabrescent, abaxially sparsely dark scaly. Fl. Mar-Apr, fr. May-Jun. 2n = 26.