A woody liana up to 25 m tall, stem to 10 cm in diameter, or less often a shrub, 2—3 m tall, branches dark or purplish brown, densely lenticellate. Leaves ovate, obovate or elliptical, 5—18 cm x 2—9 cm, base rounded or cuneate, apex acuminate, petiole 5—32 mm long. Cyme 3—32-flowered (1—6 flowers open at a time); flowers fragrant, calyx with 10—20 colleters, sepals obovate to broadly obovate, glabrous; corolla tube 1.9—4.2 times as long as the calyx, white, turning yellow near the base outside, reddish or purple near the mouth outside, red- or purple-streaked inside, at the mouth 13—22 mm wide, corona lobes narrowly triangular or subulate, pink turning purple, corolla lobes orbicular or nearly so, 14—35 mm x 15—32 mm, white with a purple stripe outside turning reddish or purple all over, white and turning yellow inside, stamens 3—15 mm long, exserted. Follicles divergent at an angle of 180?, 23—41 cm x 3—4.3 cm, tapering towards the apex, ending in a narrow, obtuse tip. Seed (9—)12—20 mm x 2.5—4.5 mm, beak glabrous for 6—15 mm and bearing a coma for (10—)23—47 mm, coma 83—102 mm long, spreading, erect or reflexed.

As a cardiac stimulant (seeds).

PROSEA (Plant Resources of South-East Asia) Foundation