Tree c. 10 m. Twigs with 2 conspicuous wings 2(-3) mm high joining the bases of the petioles, 8-10 mm diameter, bright brown, partially somewhat swollen and hollow, ant-hole present; older twigs becoming coarsely rectangular cracked and flaking; lenticels slightly concolorous. Leaves membranous or thinly chartaceous, oblong, 32-47 by 13-19 cm, base (narrowly) cordate, apex broadly acute-acuminate; upper surface oliva-ceous(-brown), lower surface with dense cinnamon hairs 0.1 (-0.3) mm; not or indistinctly papillose; dots absent; midrib slender, flat or slightly raised above, lateral nerves 20-25 per side, at 70-80° to the midrib, flat, lines of interarching ± distinct, venation finely scalariform, indistinct; petiole short, almost pulvinate, 15-20 by 8 mm, glabrous; leaf bud not seen. Male inflorescences not seen (but see note 2). Female inflorescences (from infructescences): of the Knema-type, sessile, woody brachyblasts 5 mm diameter; female flowers not known. Fruits subsessile, 2 or 3 per sessile knotty infructescence, on older twigs below the leaves, ovoid-ellipsoid, 3.5-4 by 2 cm, apex narrowly rounded or (sub)acute, base broadly rounded, velutinous, with rufous-rusty hairs 0.5-1 mm; the pericarp wrinkled and apparently much shrunken on drying, 3 mm thick; seeds oblong, 2.5 cm, grey, the aril impressed into the seed; fruiting pedicel rather stout, 2(-3) mm.
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