Dipterocarpus chartaceus Symington

Large tree. Twig, leaf bud, stipule, inflorescence, flower calyx, ovary apex and petals outside densely persistently shortly golden pubescent; leaf undersurface sparsely caducously so; fruit glabrescent. Twig c. 4 by 3 mm ø, pale brown, somewhat compressed. Buds to 7 by 3 mm, lanceolate-falcate; stipules to 8 by 9.8 cm, lorate-lanceolate. Leaf 8.5-19 by 4-9 cm, elliptic-ovate or rarely obovate, crisply chartaceous drying pale mauve and somewhat lustrous; base cuneate; acumen to 1 cm long, tapering; nerves 10-12(-14) pairs, slender but distinctly elevated beneath, ascending; tertiary nerves densely scalariform, hardly elevated; petiole 2.3-2.8 cm long, c. 2 mm ø, slender. Raceme to 6 cm long, axillary, singly branched or unbranched, bearing to 6 flowers. Flower buds to 22 by 8 mm, fusiform-lanceolate. Stamens 30, shorter than style at anthesis; filaments compressed at base, tapering rapidly and then filiform, c. 1/2 length of the relatively short linear tapering anthers; appendage acicular, c. 3/4 length of anther; ovary narrowly ovoid, pubescent, tapering into the long slender filiform style; style glabrous in apical 1/3. Fruit pedicel c. 1 by 2 mm, short; calyx tube to 18 mm ø, subglobose; 2 longer lobes to 13 by 3.2 cm, lorate, somewhat tapering distally, obtuse, c. 1 mm broad and revolute at base; 3 shorter lobes to 4 by 4 mm, orbicular, revolute.

An infrequent tree of lowland forest, sometimes in areas periodically inundated, especially in seasonal areas and near the coast.

Can be grown by seedlings.