Tree 6-30 m. Twigs not or but faintly angled at the very apex, 2-3(-4) mm diameter, early glabrescent, hairs 0.1 mm; older twigs dark brown, longitudinally fissured, cracked, or thinly flaking; lenticels small, pale, contrasting. Leaves membranous or thinly charta-ceous, oblong-lanceolate, 12-26 by 4-9.5 cm, base cuneate or (narrowly) rounded, apex acute-acuminate; upper surface olivaceous or brown, lower surface grey-brown or silvery, seemingly glabrous, hairs felty, dense, pale, scale-like, less than 0.1 mm, sometimes late glabrescent; not papillose; dots absent; midrib slightly raised above, lateral nerves 15-25 per side, at 45-80° to the midrib, flat or sunken above, reddish brown and contrasting in colour below, lines of interarching and venation inconspicuous; petiole 15-20 by 2(-3) mm; leaf bud 10-15 by 2 mm, hairs scale-like, 0.1 mm or less. Inflorescences between the lower leaves or below, of the Knema-type: a (sub)sessile (to 2 mm pedunculate) simple or forked, scar-covered, pubescent brachyblast 3(-5) mm long; in male: with a subumbel of (5—)10—15 flowers, buds of various sizes; bracts small, caducous; in female: (3-)4-6-flowered; flowers with hairs 0.1-0.2 mm. Male flowers: pedicel 4-5 by 0.6-0.8 mm, bracteole ± boat-shaped, 2.5 by 1.5(—2) mm, persistent; buds obovoid-oblong, 4(-5) by 2 mm, cleft c. 1/4, lobes 1 mm long, 0.1-0.2 mm thick. Androecium 0.5-0.6 mm; androphore (1-)1.2 by 0.4 mm, with hairs less than 0.1 mm in the lower half; synandrium narrowed at apex, 2 by 0.5-0.6 mm, thecae 14-16(-20), sterile apex acute, (0.2-)0.3 mm. Female flowers: pedicel 1.5 mm, bracteole 3.5 mm long; buds ovoid, 5 by 4 mm, the lobes 1.5 mm; ovary ovoid, c. 3 mm long, hairs minute, dense, appres-sed, pale brown. Fruits solitary or 2 per infructescence, (sub)sessile, ovoid-oblong, 2.5-3.5 by 1.7-2.5 cm, base rounded or subtruncate; hairs dense, very fine, grey-brown or yellowish brown, 0.1 mm or less, old fruits ± glabrescent; pericarp 5 mm thick; seeds ellipsoid, (1.5—)2 cm; fruiting pedicel stout, 3-5 by 4-6 mm, rough by cracks and few lenticels.
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