Large tree. Young twigs, buds, stipules outside and petioles shortly buff fugaceous puberulent. Twig c. 2 mm ø apically, terete, smooth; stipule scars short, horizontal, obscure. Bud to 3 by 2 mm, ellipsoid, obtuse. Stipule to 12 by 8 mm, elliptic obtuse. Leaves 6.5-13 by 3.5-7 cm, lanceolate to elliptic, undulate; base narrowly to broadly cuneate; acumen to 12 mm long, slender; nerves 10-13 pairs, slender but prominent beneath, at 40°-50°; tertiary nerves slender, scalariform, at c. 90° to the nerves; midrib depressed above, prominent beneath; petiole 9-17 mm long, drying rugose. Panicle to 8 cm long, terminal or axillary, terete, caducous puberulent, singly branched. Flower bud to 12 by 4 mm, fusiform. Calyx glabrous; 3 outer lobes narrowly lanceolate, acute; 2 inner somewhat shorter, broader. Petals pale yellow, lorate, obtuse, puberulent on parts exposed in bud. Stamens 15, in 2 unequal verticils; filaments compressed at base, tapering; anthers narrowly oblong; appendage to connective c. 2.5 x length of anthers, filiform, slender, glabrous. Ovary ovoid, glabrous, surmounted by a long slender glabrous style c. 3 x length of ovary; style trifid towards apex. Fruit glabrous. Pedicel to 4 mm long, c. 3 mm ø, terminating abruptly at the obtuse base of the fruit. 3 longer calyx lobes to 9.5 by 2.5 cm, spatulate, obtuse, c. 1 mm broad above the to 14 by 14 mm subglobose saccate thickened base; 2 shorter lobes to 7 by 0.6 cm, linear, similar at base. Nut to 1.5 by 1.5 cm, ovoid; style remnant to 6 mm long, persistent, frequently lustrous with a film of resin.
Can be grown by seedlings. Seeds needs soaking.
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