Deciduous trees, to 30 m high, bark 10-20 mm thick, yellowish-brown, rough, shallowly vertically fissured, fibrous; bole often fluted at base; branchlets 5-10 mm thick, 4-angled, puberulous. Leaves simple, opposite, ovate, obovate, apex acute or obtuse, base attenuate, margin entire, wavy, glabrous above and pubescent below with minute red glands, coriaceous; petiole 10-50 mm long, stout, tomentose; lateral nerves 8-10 , pinnate, prominent, raised beneath, puberulent beneath; intercostae scalariform, prominent. Flowers bisexual, white, 7 mm across, in terminal cymose panicles, 10-30 cm across, puberulous. Calyx 5 mm long, campanulate, lobes 5-6, subequal, ovate, tomentose. Corolla 6 mm long, lobes 5-6, oblong, spreading. Stamens 5-6, equal, erect, inserted at the throat, exserted; filaments 3 mm; anthers oblong. Ovary globose, superior, densely hairy, 4-celled, 1 ovule in each cell; style slender, 4 mm; stigma linearly bifid. Fruit a drupe, 1.5-2 cm across, globose, brown, densely floccose hairy, covered by the inflated calyx, epicarp spongy, endocarp stony; seeds 1-4, oblong.