Large, evergreen tree up to 45 m high and 70 cm ø. Buttresses 1½-4 m high, ½-l m wide, 8-10 cm thick. Bark greyish brown, flaky, or distinctly rugose-fissured. Leaves coriaceous, obovate-oblong, elliptic-lanceolate, or elliptic, 8½-34½ by 4-14 cm, glabrous, sometimes tomentose and glabrescent beneath; base cuneate, sometimes obtuse; apex obtuse, acuminate, sometimes slightly emarginate; nerves 9-24 pairs, prominent beneath, distinct above; veins reticulato-scalariform, distinct on both surfaces; petiole 2-6 cm. Panicles 16½—33 cm long, pubescent, sometimes glabrescent; pedicels 2½-3 mm, articulated. Flower-buds ovoid, 3-3¾ by 1¾-2 mm, obtuse. Calyx red, 3-3¾ mm long, bursting irregularly, puberulous outside. Petals white, imbricate, ovate-oblong, lanceolate, or elliptic, 4-7 by 1¾-2½ mm, villose on both surfaces. Stamens 5, 2½-4 mm; filaments pilose, glabrescent; anthers oblong, ¾ mm long. Torus pulvinate, c. 1½ mm ø. Ovary subglobose, c. 1½ mm ø, pilose; stipe obscure; style lateral, 2-2½ mm. Drupe on an obscure, centric stalk, avoid or ellipsoid, c. 1½ by 1 cm, smooth, brownish; wing-like, enlarged petals red, elliptic-oblong or-lanceolate, 5¾-8 by 1¼-1¾ cm; embryo ovoid or broadly ellipsoid, c. 1¼ by ¾ cm; cotyledons free.
Swampy or dryland forest, in peat-swamp forest in Palembang often co-dominant (HEYNE), sometimes on limestone, in Malaya common on hillsides, up to 500 m. Fl. fr. Jan.-Dec.In the south of Malaya trees flower early in the year, about a month after the Christmas rains have ceased. The shabby green, rather narrow crowns are then whitened with blossom and are rendered prominent throughout the forest. Trees'.may bedeciduous, perhaps, in northern Malaya ( CORNER Ways. Trees 1940 120 ).
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An emergent or canopy tree in undisturbed dry or swampy forests, sometimes in peat swamp forest, rarely on limestone, usually at elevations up to 500 metres, occasionally to 1,000 metres.
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