Description from Flora of China
Herbs perennial, ca. 2 m tall, glabrous. Leaves 1-pinnately compound, 7-8 cm; lateral leaflets elliptic, 5-7 X 3-4 cm, margin serrate. Inflorescences racemose, terminal, 10-30-flowered, ca. 65 cm; bracts linear, 1.2-2.5 cm; bractlets linear. Pedicel 5-10 mm. Calyx campanulate, 1.5-1.7 cm; teeth 2-2.5 X 5-6 mm, rounded to truncate, apex mucronate. Corolla pale red, 5-5.5 cm; lobes rounded or emarginate, 1.6-1.8 X 2.5-2.8 cm, glandular pubescent. Staminode ca. 1.5 mm. Capsule long horned, ca. 6 cm, 4-angular, apex acuminate. Seeds broadly ovoid, 4.5-5 X 3.5-4 mm, brown, surrounded by a membranous wing 1-2 mm wide. Fl. Jun-Aug.
* Thickets, forests; 2100-2800 m. SW Sichuan, C Xizang, N and W Yunnan (Lijiang, Yongping, Yongshan).