A small to medium-sized tree up to 20 m tall, bole up to 35 cm in diameter, bark surface greyish, branches puberulent. Leaves elliptical to broadly ovate or broadly obovate, 6-18 cm x 3-8 cm, puberulent but glabrescent above, with 10-15 pairs of secondary veins, petiole 0.3-0.8 cm long. Flowers pale yellowish, pinkish or reddish, corolla subrotate, the tube 3-7 mm long, the lobes 8-16 mm long, stamens inserted at the mouth of the tube. Follicles coherent, broadly fusiform, 17-35 cm long, densely and conspicuously lenticellate.

As an antidote against snake bites and scorpion stings (bark of stem and roots).

PROSEA (Plant Resources of South-East Asia) Foundation

The bark is used to treat renal complaints.