An irregularly branched tree, 13(—30) m tall, smooth, twigs pale brown, deeply furrowed when dry. Leaves opposite, elliptical, oblong or ovate, 10—20(—30) cm x 6—10(—15) cm, base acute to cordate, apex acute or acuminate, veins red or dark coloured, petiole 1—6 cm long; thyrse terminal, 1.7—3.5 cm x 3—4.5 cm, peduncle 1.5 cm long, accrescent to 3 cm, bracteoles 2—4. Flowers bisexual, pedicel 1—1.5 mm long, perianth funnel-shaped, 4 mm long, 5-lobed, with 5 rows of black glands, stamens 6—10, exserted for 2 mm, stigma fimbriate, included. Anthocarp elongate to club-shaped, 12 mm x 2.5 mm, 5-ribbed, each bearing a row of viscid prickles, 1 mm long, hairy between the ribs.

Anti-inflammatory and diuretic (leaves).

PROSEA (Plant Resources of South-East Asia) Foundation

Leaves are crushed or heated and applied to swellings or open ulcers, corns, calluses, or applied for oedema of the legs and taken internally for dysentery.