Twig, petioles, buds, and stipules outside (glabrous within) very shortly evenly persistently pale buff pubescent, leaf nervation beneath sparsely so. Twig c. 3 mm ø, stout, crooked, ribbed, becoming rugose, flaky, pale grey-brown; stipule scars prominent, horizontal; internodes 1-3 cm long. Bud to 4 by 4 mm, ovoid-conical, subacute. Stipules to 14 by 4 mm, lorate, subacute, subpersistent. Leaves 13-32 by 5-11 cm, oblong to narrowly elliptic, thickly coriaceous; base broadly cuneate to subcordate; acumen to 1.5 cm long; nerves (10-)16-20 pairs, prominent beneath, slightly elevated above, arched at 50°-60°, with short hardly elevated secondary nerves; tertiary nerves reticulate; midrib prominent beneath, applanate above; petiole 2-2.5 cm long, stout, not geniculate, drying pale buff pubescent. Panicle to 14 cm long, terminal or axillary, ribbed, at first shortly evenly buff pubescent, becoming pale brown flaky; irregularly branched, with many branches near base, appearing fascicled. Flower bud to 14 by 3 mm, fusiform; calyx densely shortly pale buff pubescent; flowers otherwise typical. Fruit glabrous. Pedicel to 3 mm long, stout. Calyx lobes to 12 by 7 mm, deltoid, acute, incrassate, reflexed, recurved. Nut to 5 by 3.5 cm, oblong, symmetrical and obtuse to ovoid, more or less prominently attenuate-acute and asymmetrically twisted, sometimes irregularly pitted, furrowed at the sutures, minutely verruculose and rugulose; pericarp thick, corky.
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A tree. It grows 30 m tall. The trunk s 20-70 cm across. The leaves are simple and alternate. They are 10-30 cm long by 5-10 cm wide. The fruit are oblong capsules 4-5 cm long by 2-3 cm wide. There is one round seed 1 cm across.
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