Lianas to 10 m, glabrous except for inflorescences. Stems lenticellate. Petiole 1-3(-4) cm; leaf blade broadly elliptic, 6-10(-13) × 3-6(-8) cm, base rounded, apex acute; lateral veins 8-10 pairs, widely patent. Cymes paniculate, dichotomous, shorter than leaves, rusty pubescent. Sepals ovate, 1.1-1.6 × 0.8-1.2 mm, rusty puberulent outside. Corolla yellowish orange with a violet center; tube 0.5-1 mm; lobes oblong, 1.8-2.3 × 1-1.5 mm, glabrous outside, villous inside. Corona lobes triangular-oblong, with a distinct slender adaxial tooth near apex. Pollinia subglobose, erect. Stigma head capitate to peltate. Follicles lanceolate, 9-12 cm × 5-10 mm, cylindric. Seeds oblong, brown, ca. 1.5 cm; coma to 5 cm. Fl. Jan-May, fr. Aug-Dec.

Mixed woods; 500-1000 m. S Yunnan [Myanmar, Thailand].