Lianas to 5 m. Young branchlets rusty pubescent, glabrescent and lenticellate with age. Petiole ca. 2.5 cm, rusty tomentose; leaf blade broadly ovate-oblong, 9-15 × 5-5.8 cm, papery, adaxially glabrous except for rusty hairs along midvein, abaxially rusty pubescent, base rounded, apex acute or short acuminate; lateral veins 5-7 pairs. Cymes to 8.5 cm, shorter than leaves, few branched, 12-20-flowered, rusty pubescent; peduncle less than 1 cm. Flower buds long acuminate. Pedicel ca. 5 mm. Sepals lanceolate, ca. 3 mm. Corolla yellow, ca. 9 mm, glabrous; lobes oblong-lanceolate. Corona lobes ovate, longer than anthers, apex acute. Stigma head long beaked. Fl. May.

* Open montane woods. Guangdong, Guangxi, Yunnan.