Shorea lamellata Foxw., Mal. For. Rec. 10 (1932)

Diagnostics
Emergent trees up to 56 m tall and 129 cm dbh. Stems with resin. Stipules small. Leaves alternate, simple, penni-veined, petiole and lower surface with scales, feeling like sand-paper, secondary veins close together. Flowers ca. 16 mm in diameter, white-yellow, placed in panicles. Fruits ca. 10 mm long, green, with three ca. 56 mm long wings, wind dispersed.

Description
Large tree. Twig, leaf buds, stipule outside, panicles, calyx, parts of petals exposed in bud, ovary and nut unevenly scabrid; becoming sparse, scabrous, on fruit calyx, stipule within, petiole and leaf nervation beneath. Twig 2-3 mm diameter apically, terete, becoming smooth. Leaf bud to 7 by 4 mm, ovoid-falcate, acute. Leaves (6.5-)10-15 by (3.5-)4-8 cm, elliptic-oblong to ovate, occasionally obovate, +/- thinly coriaceous; base obtuse to shallowly caudate; acumen to 7 mm long, short, +/- abrupt; nerves 19-25 pairs, very slender but +/- prominent beneath, applanate above, arched, at 65 -70 degrees; tertiary nerves densely scalariform, very slender but evident and slightly elevated beneath; midrib slender but prominent beneath, obscure and depressed above; petiole 16-22 mm long, slender. Panicle to 14 cm long, slender, terminal or axillary, lax; singly branched, branchlets to 4 cm long, bearing to 3 secund flowers. Flower buds to 10 by 5 mm, ellipsoid; sepals narrowly ovoid, acuminate, somewhat unequal; petals white; stamens 15, shorter than style at anthesis; filaments very long and slender, with scabrous apices, 2 times length of anthers. Ovary small, ovoid, puberulent, tapering imperceptibly into a tapering puberulent stylopodium twice its length and long filiform glabrous style thrice its length. Fruit pedicel c. 2 mm long and diameter, base of fruit obtuse, 3 longer calyx lobes to 18 by 1.5 cm, spatulate, obtuse, c. 7 mm broad above the 11 by 10 mm elliptic saccate thickened base; 2 shorter lobes to 7 by 0.5 cm, lorate, subacute, similar at base. Nut to 14 by 10 mm, ovoid, prominently apiculate. [from Flora Malesiana]

Ecology
In undisturbed mixed dipterocarp forests up to ca. 650 m altitude. Found on alluvial as well as dry sites (hillside and ridges) on sandy to clayey soils, also on limestone.

Uses
The timber is used.

Distribution
Peninsular Malaysia, Sumatra, Borneo.

Local names
Borneo: Buniau, Kebaong, Damar mata kuching, Pakit, Tunam, Tunen.
Malaysia: Meranti lapis.