A small tree or shrub, up to 15(—30) m tall. Leaves suborbicular, or the upper ones ovate, 10—15 cm long, base deeply cordate, apex cuspidate, margin finely toothed, beneath 1—5 central veins with a nectary, upper surface shiny, stipules large, spreading. Epicalyx cupular, slightly accrescent, shorter than the calyx, 8—11-lobed, stellate-hairy, calyx campanulate, 5-fid, outside with nectaries, corolla large, 5 cm long, yellow with a purple heart, turning orange-red, staminal column antheriferous throughout, shorter than the petals, yellow, style and stigmas purple. Seeds 5—7 per cell, reniform, punctate with tiny warts, black-brown.

Laxative (leaves); emetic (pulverized roots).

PROSEA (Plant Resources of South-East Asia) Foundation
Habitatnews

Used for treating sore throat, pneumonia, cough, tuberculosis and diarrhoea (decoction of leaves); crushed in water and drunk to ease labour (leaves and roots); to treat dysentery (fresh bark soaked in water).