Tree to 40(-53) m high and 80(-115) cm diam.; twigs glabrous, brown or blackish brown provided with many sometimes light coloured annular stipular scars; stipules glabrous but with a tuft of hairs at the apex, the inner margins sometimes beset with long white hairs. Leaves glabrous, glossy but rarely the undersurface glaucous ('var. glauca'), mostly narrowly elliptic, sometimes elliptic, 7.5-22(-27) by 3-6(-8) cm; acumen 3-20 mm; base cuneate to sometimes rounded; midrib much prominent below; nerves in 11-16 pairs meeting in a looped intramar-ginal vein which is prominent on both under-and uppersurface but on the uppersurface hardly distinct from the venation; reticulation densely netted, prominent on both surfaces, the marginal vein included in the reticulation. Petiole 8-20(-25) mm. Brachyblast glabrous, 3—5(—6) cm long; spathaceous bracts one pair, c. 6 cm long, glabrous but with some hairs apically; pedicel glabrous, c. 5(— 10) mm, often in N. Sumatra and the Malay Peninsula nearly absent. Tepals c. 18-36, the 4 outer sepaloid ones light yellowish green in vivo, narrowly obovate or mostly elliptic, the longest c. 4.5-7 cm long and up to 1.5(-1.8) cm broad, the others white, narrowly elliptic, slightly shorter and much narrower. Stamens 60-70, filament c. 0.5 mm, anthers 8-9 mm, the connective produced in a long setaceous, 12-15 mm long appendage; a short gynophore present between stamens and carpels. Fruits ellipsoid to orbicular, c. 5-7 cm long and c. 3-5 cm diam., tepal and staminal scars along c. 5 mm of the torus, gynophore also c. 5 mm long but rarely shorter to nearly absent.
Common, mostly in lowland rain-forest but in Sumatra also to 1200 and in Aceh (G. Leuser) to 1850 m, in Java up to 1200 m. Fl. fr. Jan.-Dec.
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