Stems twining, sometimes erect, sparsely pilose on 1 side. Petiole 4-12 mm, pilose; leaf blade lanceolate, 3.4-5.2 × 1.3-2.4 cm, pubescent, base broadly cuneate to rounded, apex acuminate. Inflorescences 1- or 2-flowered; peduncle 0-4 mm, pilose on 1 side. Pedicel 7-8 mm, glabrous. Sepals linear-lanceolate, 3-4.5 × 0.6-1 mm, glabrous. Corolla 1.8-2.2 cm, glabrous except for a band of ciliate hairs ca. 2/3 up tube on inside; tube ovoid-fusiform, 1.1-1.4 cm, 4.7-6.3 mm wide, narrowing to throat 2.6-3.5 mm wide; lobes linear-spatulate, 7-8 mm. Outer corona reduced to ciliate flanges; inner lobes linear-oblong.

ca. 3000 m. ?Sichuan, Xizang [India, Nepal, Sikkim]