Tree 10-20 m. Twigs angular and 2-ridged, 2-2.5(-3) mm diameter, early glabrescent, hairs less than 0.1 mm; older twigs sometimes faintly cracking; lenticels scattered. Leaves membranous or chartaceous, (obovate-)elliptic or oblong-lanceolate, 14-35 by 6.5-16 cm, base narrowly rounded or cuneate, apex acute-acuminate; upper surface olivaceous or brown, lower surface greyish, glabrescent, hairs scattered or touching, scale-like, 0.1 mm or less, but leaving the surface visible; distinctly papillose or not; dots absent; midrib slightly raised above, lateral lateral nerves 17-27 per side, at 45-70° to the midrib, flat or sunken, lines of interarching and venation visible; petiole 15-25 by 2-4 mm; leaf bud 10-16 by 2-3 mm, hairs 0.1 mm. Inflorescences between the leaves or below, of the Knema-type: sessile, simple or forked, woody, tubercle-like scar-covered brachyblast up to 12 mm long, minutely pubescent; in male: with 6-20 flowers in subumbels, buds unequal in size; in female: smaller, with 1 or 2(-4) flowers; flowers with hairs 0.2-0.3 mm long. Male flowers: pedicel 4-6 mm long, bracteole ± acute, 2.5-3.5 mm, subpersistent; buds ovoid(-oblong), apex subacute, 5-5.5 by 3-4 mm, cleft c. 1/4 to nearly halfway (see note 2), lobes 0.2-0.3 mm thick. Androecium 4-4.5 mm; androphore 1(—1.5) mm, glabrous or with few minute hairs towards base; synandrium 2.5 by 0.6-0.7 mm, thecae 12-14, sterile apex 0.2(-0.3) mm, irregular in shape, rather blunt. Female flowers (Binnendijks.n., Bum): pedicel 1-1.5 mm long, bracteole caducous; buds ovoid, 4 by 3-3.5 mm, cleft 1/4-1/3; ovary ovoid, 2.5 mm. Fruits solitary or paired, ovoid-ellipsoid, (2.5-)3-3.5(-4.5) by 2-2.5(-3) cm, apex often shortly beaked, hairs scurfy, pale or dark brown, 0.1-0.2 mm, partly (late) glabrescent; pericarp 2-3(-5) mm thick; seeds ellipsoid, 2-2.5 cm; fruiting pedicel glabrescent, 2-6 mm long.
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