(Big) trees, up to 35 m high, bole up to 20 m high, dbh up to 80 cm; sometimes fluted or buttresses present, up to 3 m tall; flowering branchlets 2.5-3 mm thick, sericeous-tomentose, white to whitish green. Indumentum simple short (less than 0.5 mm long), mainly sericeous hairs, generally most parts rather glabrous except young branchlets. Outer bark white to grey to yellowish grey to yellowish to yellowish brown to light brown to greenish or dark brown, smooth to fissured to slightly vertically corky-ridged, peeling or not, yellow and grey-brown, 0.2-1 mm thick; under bark pinkish straw; inner bark pinkish straw to light red to dark red to red-brown, 6-15 mm thick, fibrous, rather brittle to very hard; wood yellowish to orange brown, hard. Stipules triangular, 0.8-1 by 0.6-0.7 mm, thick, outside subsericeous, inside glabrous, very early caducous. Leaves: petiole 5.5-13 mm long, channelled above, (sub)glabrous; blades ovate to elliptic, 5.2-20.5 by 2.1-6.7 cm, length/width ratio 2.5-3.1, coriaceous, drying brownish, base shortly attenuate to acute, margin entire, flat, apex bluntly acuminate, upper surface glabrous (to few hairs when young), glossy, green above, lower surface glabrous to subsericeous when young, paler green, young leaves light green, venation slightly raised above except for the slightly sunken midrib, nerves 9-11 per side. Inflorescences terminal, up to 18 cm long, sericeous; bracts up to 0.8 by 0.3 mm, thick, inside glabrous. Flowers 5-merous; calyx c. 1.5 mm deep, glabrous inside, lobes 5, triangular, c. 0.2 by 0.2 mm, apex acute; petals 5, elliptic, 3.1-3.5 by 0.8-1 mm, apex acute, hook-like, bend inwards, tomentellous on both sides, greenish white to white. Staminate flowers c. 4 mm diam. (young flower); pedicel up to 12 mm long; petals probably spreading horizontally; stamens 10, in two whorls, free, filaments cylindrical, hirsute, of two lengths, up to 1.7 mm long, connective with hairy apical appendage up to 0.3 mm long, anthers c. 0.4 by 0.6 mm; pistillode c. 2 by 0.5 mm, hairy. Pistillate flowers c. 2 mm diam., not fully open; pedicel c. 1. 5 mm long, elongating up to 4.5 mm in fruit; ovary 4-or 5-(or 6-)locular, c. 1.2 by 1.2 mm, ribbed, apically narrowing and with crater-like opening, stigmas only seen as split bands on inside of apical opening, c. 0.4 mm long. Fruits subglobular to ovoid to angular-subglobular, 1.5-3.8 cm high by 2.1-4.5 cm diam., green when unripe, fleshy, woody when dry; wall very thick, 8-17 mm. Seeds flattened, boomerang-like in transverse section with hollow side extrorse, c. 7.5 mm long.
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