A liana or sarmentose shrub up to 5 m tall, stem up to 4 cm in diameter, branches dark grey, densely lenticellate. Leaves elliptical or slightly obovate, 3—10 cm x 1.5—5 cm, base cuneate or decurrent, apex rounded, acute or acuminate, petiole 5—10 mm long. Cyme 1—15-flowered (1—3 flowers open at a time); flowers sometimes fragrant, calyx with 0—5 colleters per sepal, sepals narrowly triangular, subscarious; corolla tube 1.1—2.8 times as long as the calyx, white, turning yellow, red-spotted inside, at the mouth 5—12 mm wide, corona lobes triangular or subulate, white or greenish yellow, corolla lobes ovate, abruptly narrowed into the tails, white turning yellow, tails spreading or pendulous, yellow, lobes including the tails 3.5—10 cm long, stamens from 1.2 mm long and included, to 2.5 mm long and exserted. Follicles divergent at an angle of 200—250?, 9—15 cm x 1.7—3 cm, tapering into a rather narrow apex, with an obtuse tip. Seed 13—18 mm x 3—3.5 mm, beak glabrous for 1—7 mm and bearing a coma for 11—27 mm, coma 35—55 mm long, erect or reflexed.

Anti-inflammatory and insecticide (seeds)

PROSEA (Plant Resources of South-East Asia) Foundation

The leaves and seeds are used to treat scabies, rheumatism and swellings caused by falling or bites. In China, the seeds are the main constituent of the drug 'yang-chi'ao-ou' or 'yang jiao ao zi' which are used to quicken the blood and disperse swelling, relieve itching and kill worms.