Description from Flora of China
Lianas to 6 m, softly and densely short tomentose. Petiole 2-3 cm; leaf blade elliptic or oblong-elliptic, 6-15 × 4-7 cm, papery, adaxially sparsely pilose, abaxially short tomentose, base rounded, apex abruptly short acuminate; lateral veins 4 or 5 pairs. Inflorescences umbel-like, 7-15-flowered; peduncle 1.5-5 cm. Pedicel 1-2 cm. Sepals ovate; glands 10. Corolla white outside, deep maroon or orange inside, to 1 cm; lobes oblong-lanceolate, much longer than tube, glabrous outside, pilose inside. Corona lobes lanceolate, erect, as long as anthers. Stamens ca. 3 mm; anther appendages orbicular; pollinia oblong, ca. 1 mm. Stigma head produced into a threadlike beak 5-6 mm. Follicles fusiform ca. 13 × 3 cm, densely tomentose. Seeds oblong-ovate, ca. 1 × 0.5 cm; coma ca. 2 cm. Fl. Jul-Sep, fr. Sep-Nov.
* Dense forests; to 3000 m. Sichuan, Xizang, Yunnan.