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*A medium-sized tree of up to 30 m tall, bole often of poor shape, up to 64 cm in diameter and with low, rounded buttresses, bark surface with corky pustules, pale orange-brown, tending to turn pale greyish-white; buds ovoid, densely pinkish buff pubescent; leaves .*Leaves broadly ovate to elliptical, 7-12 cm × 3-7 cm, base obtuse or broadly cuneate, acumen to 8 mm long, secondary veins 9-12 pairs, lower surface sparsely shortly caducous pubescent on the veins, petiole 1.5-2.5 cm long, sparsely pubescent, stipules linear, acute; stamens about 25; fruit .*Fruit calyx tube narrowly ovoid to ellipsoid, with 5 narrow wings, glabrous, 2 larger fruit calyx lobes up to 7.5 cm × 1.8 cm, 3 shorter ones about 5 mm × 4 mm.  ''D. borneensis'' is widespread but owing to its edaphic preferences mainly subcoastal. It occurs in heath forest on podzols or giant podzols below 350 m altitude. The density of the wood is 690-900 kg/m³at 15% moisture content.