Deciduous climber. Leaves elliptical to oblong-obovate, 7 to 10 cm long, 2.5 to 4.5 cm wide, obtuse, narrowed at the base into a short petiole or sessile. The uppermost pair connate into a elliptic disk, 4 to 6 cm long, acute at both ends, seperated from the pair below by a slender internode 4 to 6 cm long.
Flowers in a stalkless whorl, pendulous. Corolla funnel shaped, 2.5 to 3.5 cm long,
yellow, sometimes with reddish spot.

China: Guizhou and Sichuan province near the border of Xizang and Tibet frontier.