Small gnarled, ± shortly deciduous tree (in Malesia). Young calyx, twigs and panicle caducous puberulent, otherwise glabrous (in Mal.). Twigs 3-5 mm ø apically, terete, smooth; stipule scars short, pale. Bud small, ovoid, acute; stipule to 18 by 7 mm, ovate-falcate, fugaceous. Leaves 9-12 by 6-13 cm (smaller if subtending panicles), broadly ovate-oblong, chartaceous; base deeply cordate to cuneate (if subtending panicles); acumen to 1 cm long, short, broad; nerves 13-16 pairs, slender but prominent beneath, barely elevated above as also the midrib, arched, the basal pair with prominent lateral branchlets; tertiary nerves remotely scalariform, sinuate, slender but typically prominently elevated beneath; petiole 3-5 mm long, c. 2 mm ø, straight. Panicle to 14 mm long, terminal or axillary, lax, peduncle stout at base; irregularly branched, branchlets to 7 cm long, bearing a few ± secund flowers. Anthesis directly following leaf fall; bud to 15 by 6 mm, large, ellipsoid; sepals narrowly ovate, prominently slender, acuminate, subequal; petals broadly elliptic, glabrous (in MaL); stamens 15, subequal; filaments lorate, slightly tapering; anther cells linear, extended apically beyond the connective into prominent tapering horns c. 1/2 their length; appendages acicular, glabrous, c. 1/2 length of anthers; ovary narrowly ovoid, tapering into a stoutly columnar style c. twice its length and exceeding the stamens at anthesis. Fruit pedicel to 5 by 3 mm, broadening into the receptacle; 3 longer calyx lobes to 12 by 1.3 cm, narrowly spatulate, narrowly obtuse, c. 4 mm broad above the to 8 by 7 mm elliptic saccate thickened base; 2 shorter lobes to 7 by 0.5 cm, lorate, subacute, similar at base. Nut to 20 by 12 mm, ovoid, tapering into an up to 8 mm long prominent acicular style remnant.
Can be grown by seedlings. Seeds needs soaking.
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