Tree c. 15 m. Twigs 5-10 mm diameter, ± hollow, early glabrescent, hairs scurfy, less than 0.1 mm; older twigs soon finely longitudinally cracking, thinly scaly; lenticels grey-brown, abundant, but not conspicuous. Leaves thinly coriaceous, elliptic-oblong, 30-40 by 14-20 cm, base rounded or somewhat cordate, apex subacute; upper surface olivaceous-brown, lower surface pale brown, ± glabrescent, hairs scurfy, less than 0.1 mm; not papillose; dots absent; midrib slightly raised above, lateral nerves 18-23 per side, at 60-80° to the midrib, flat or sunken, lines of interarching distinct, venation ± trabeculate, faint at both surfaces; petiole 26-40 by 4-6 mm (in vigorous sapling shoots ± alate); leaf bud 25 mm long, hairs 0. l(-0.2) mm or less. Inflorescences between the leaves and below, of the Knema-type, in male: peduncle up to 6 mm long, with a simple or a 2-4-fid woody, scar-covered brachyblast (5-) 10-20 by 4-7 mm, with ± woolly hairs 0.2-0.3 mm, ending with clusters of 3-6 (or more) flowers, buds of various sizes; bracts minute, caducous; flowers with woolly hairs 0.2-0.3 mm. Male flowers: pedicel (10-) 14 by 1.5(—2) mm, bracteole (sub)persistent, 4.5-5 mm long; buds ellipsoid(-oblong), 8-8.5 by 4-4.5 mm, apex narrowly rounded, cleft c. 1/5, lobes (0.4-)0.5 mm thick. Androecium 7 mm; androphore 2.5 by (1-)1.5 mm, with a few scattered pale hairs 0.1 mm; synandrium 4.5 by 1.5(-2) mm, thecae c. 20, sterile apex 0.1 mm, rather flat with lobed ege. Female flowers and fruits not seen.
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