Small to medium-sized tree. Vegetative parts glabrous. Twig c. 3 by 1 mm ø apically, smooth, compressed, ribbed; stipule scars to 1 mm thick, prominent, amplexicaul, pale. Bud c. 8 by 6 mm, a loose aggregation of young leaves and stipules. Stipule to 2.5 by 1.5 cm, prominent, subpersistent, ovate, acute or subacute, with cordate subequal base. Leaves 8.5-23 by 4.2-11 cm, oblong, chartaceous, undulate, ± lustrous; base typically cordate, sometimes obtuse or broadly cuneate; acumen to 1 cm long; nerves 9-12 pairs, slender but prominent beneath, at 45°-65° to the midrib; tertiary nerves sinuous, remotely scalariform, vertical to the nerves; midrib prominent beneath, applanate above; petiole 11-22 mm long, drying rugose. Panicle to 20 cm long, terminal or axillary, glabrous, terete, ascending; singly branched, branchlets to 7 cm long, bearing to 10 flowers; bracts to 18 by 8 mm, as stipules, caducous; bracteoles to 6 by 4 mm, elliptic, obtuse, subpersistent, prominent. Flower bud to 10 by 3 mm, lanceolate. Sepals narrowly deltoid, acute, subequal, sparsely pubescent on parts exposed in bud. Petals lanceolate, sparsely pubescent on parts exposed in bud. Stamens 15, the inner 5 longer than the outer 10; filaments compressed and connate along 3/4 of their length, abruptly tapering below the broadly ellipsoid anthers; appendage to connective 4-5 times length of anthers, almost reaching style apex, slender, sericeous in the distal 1/2. Ovary ovoid, glabrous; style and stylopodium spindle-shaped, glabrous. Fruit pedicel to 7 mm long, to 4 mm ø, large. Calyx glabrous; 3 major lobes to 7.5 by 2.3 cm, narrowly oblong to broadly spatulate, c. 12 mm broad above the to 22 by 18 mm ovate saccate thickened base; 2 inner lobes to 6.5 by 1.2 cm, as long as or somewhat exceeding the nut, oblong, similar at base. Nut to 5.5 by 3 cm, ovoid, acute, shortly densely evenly pale buff pubescent.
Can be grown by seedlings. Seeds needs soaking.