Shrubs epiphytic, glabrous except for calyx and corolla; stems to 1.5 m. Petiole 0.5-1.5 cm; leaf blade lanceolate, oblong-lanceolate, or ovate-lanceolate, 4-10 × 2-3 cm, leathery when dry, base obtuse, margin subrevolute, apex acuminate; lateral veins obscure. Pseudumbels flat topped, 10-14 (-20)-flowered; peduncle 1-5 cm. Pedicel ca. 2 cm. Sepals acute, puberulent. Corolla 1-5 cm in diam.; lobes ovate-triangular, puberulent, margin ciliate. Corona lobes broadly ovate, distally flat and with a central boss, outer angle acute, margin convex, suberect, apex concave, umbonate at middle, 3-3.5 mm. Fl. Sep.

Mountain forests; 1500-2500 m. NW Yunnan [Thailand].