Tree 6-40 m. Twigs 2-4 mm diameter, pale, grey or yellowish, early glabrescent, hairs greyish, 0.1-0.3 mm; older twigs straw or (brown) yellow to greenish yellow, not longitudinally cracking; sometimes with a few pale brown lenticels. Leaves chartaceous, elliptic or oblong, 9-21 (-32) by 3—9(—12) cm, base narrowly rounded or acute, apex acute-acuminate; upper surface yellowish or olivaceous, lower surface greyish or pale olivaceous, ± glabrous (early glabrescent), hairs scattered, appressed, greyish or pale brown, 0.1 mm or less, surface minutely pustulate; papillae not obvious; dots sometimes present, scattered, faint; midrib above flat or slightly raised, lateral nerves 8—13(—15) per side, at 45-60(-70)° to the midrib, faint, flat or slightly raised above, distinct on lower leaf surface, lines of interarching sometimes distinct, venation faint on both surfaces; petiole 10-20(-30) by 1.5-2.5 mm, drying the same colour as the twigs; leaf bud (10-) 15-20 by 1-1.5 mm, hairs glossy, light brown, 0.1-0.3 mm. Inflorescences among the leaves, pedunculate, ± glabrescent, hairs (sparse) pale, appressed, 0.1 mm or less; bracts minute, subpersistent; in male: 1-2.5 by 1-1.5 cm, few-flowered, peduncle slightly flattened, 5-12 mm, branches simple, up to 5 mm, central axis similar, sometimes absent or with but a single flower; flowers in loose subumbels of 3-5; buds of various sizes; female inflorescences like the male, flowers only 1-3; flowers angled, hairs sparse, appressed, pale, 0.1 mm. Male flowers: pedicel 3-5 by 1-1.5 mm, bracteole ± reniform, often ± truncate or faintly ± 3-topped, 0.5-1 (-2) mm, persistent, apical or rarely to 1 mm below; buds elliptic-oblong, sometimes slightly contracted below the lobes, 7-8(-9) by 2.5-3.5 mm, apex subacute, 3-angled, cleft c. 1/3, lobes 0.5-0.8 mm thick, perianth lower down thinner. Androecium 5-7 mm; androphore slightly tapering, 2(-2.5) mm, glabrous or at base thinly minutely pubescent; synandrium 4-4.5 by (1-)1.5 mm, thecae 10-12, ± appressed, sterile apex ± blunt, 0.5 mm. Female flowers: pedicel 3 mm; buds ovoid-oblong, ± urceolate, inflated, 6-8 by 3-4 mm, apex acute, angled, cleft c. 1/2, lobes at anthesis reflexed; ovary long-conical (including style) 5 by 1 mm, hairs dense, appressed, 0.1 mm. Infructescences often conspicuously lenticellate. Fruits 1 or 2, ovoid or ellipsoid(-oblong), 4.5-7.5 by (2-)2.5-4 cm, apex rounded or bluntly narrowed or somewhat beaked, base often narrowed into 4-12 mm long pseudostalk, early glabrescent, hairs 0.1 mm; pericarp dull dark brown, 5(-10) mm thick; seeds ellipsoid, 4-5 cm; fruiting pedicel slender, 5-10 mm.
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A tree. It grows to 35 m high. The trunk is 100 cm across. It usually has deep thick buttresses or stilt roots. The crown has hanging branches. The bark is pale grey and smooth with lenticels. The leaves are papery. They are oval or oblong. They taper at both ends. There are 12-17 pairs of secondary veins. The flowering stalk has few branches and the fruit occur in clusters. The fruit is large and mango shaped. It is smooth and orange-yellow.
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