Small or medium-sized, rarely large tree. Young twig, leaf bud, and stipule outside densely evenly pale buff pubescent, stipule inside, petiole and leaf nervation sparsely so, sometimes glabrescent. Twig c. 2 mm ø, compressed apically, becoming smooth, terete; stipule scar short, horizontal. Bud to 13 by 6 mm, lanceolate, falcate, acute. Stipule to 15 by 3 mm, lanceolate, acute, caducous. Leaves 8-25 by 4-10 cm, ovate to oblong, chartaceous, undulating; base broadly cuneate to subcordate; acumen to 1 cm long, broad; nerves 12-16 pairs, slender but prominent beneath, at 45°-65°; tertiary nerves slender, dense; midrib applanate to depressed above, prominent beneath; petiole 14-25 mm long, drying ribbed. Panicle to 16 cm long, terminal or axillary, terete, shortly evenly persistently pale buff pubescent; doubly branched, branchlets to 5 cm long, bearing to 10 secund flowers; bracteoles to 4 by 2 mm, ovate, acute, puberulent, caducous. Flower bud to 7 by 3 mm, fusiform. Sepals ovate, densely pubescent on parts exposed in bud; 3 outer acute, 2 inner smaller, thinner towards the fimbriate margins, acuminate. Petals pale yellow, lanceolate, pubescent on parts exposed in bud. Stamens 15, in 3 unequal verticils; filaments compressed at base, tapering medially and filiform below the broadly ellipsoid anthers; appendage to connective slender, c. 2 x length of anthers. Ovary ovoid, tapering, pubescent; style filiform, c. 2 x length of ovary, pubescent in the basal 1/4. Fruit pedicel to 2 mm long. Calyx puberulent, glabrescent, short, 3 longer lobes to 5 by 0.7 cm, lorate, obtuse, with to 2.5 by 2.5 cm ovate thickened prominently saccate base; 2 shorter lobes to 3 cm long, otherwise similar. Nut to 3.5 by 2.5 cm, ovoid, apiculate, densely evenly shortly persistently pale yellow-brown pubescent.
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A large tree. It grows 60 m tall and can be 125 cm across the trunk. It has buttresses. The bark is grey to light brown. The leaves are alternate and oval or oblong. They are 8-25 cm long by 4-10 cm wide. They are wavy. The flowers are pale yellow. The fruit is an oval nut with short pale brown hairs. They are in groups in the axils of leaves or at the ends of branches. There are 3 longer calyx lobes that are oval and strap shaped and 5 cm long by 0.7 cm wide. and then 2 shorter lobes.
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