Tree 4-20(-30) m. Twigs sub terete or ± angular, 1-2 mm diameter, early glabrescent, hairs 0.1(-0.3) mm; older twigs with small lenticels. Leaves chartaceous or thinly coriaceous, ovate-elliptic or lanceolate, (4-)7-17(-21) by (1.5-)2-6(-9) cm, base cuneate, apex acute-acuminate, the very apex sometimes ± blunt; upper surface olivaceous or brown, lower surface pale greyish brown, glabrescent, hairs 0.1-0.2 mm or less, or persistent, sparse (lens!); usually distinctly papillose; dots absent; midrib above somewhat raised, lateral nerves 8-20 per side, at 45-80° to the midrib, rather closely set, flat and faint above, little raised, sometimes hardly visible below, lines of interarching and venation indistinct; petioles 5-15 by l-2(-2.5) mm; leaf bud 6-12 by 1-2 mm, hairs (0.1-) 0.2(-0.3) mm. Inflorescences between the leaves and/or below, ± pubescent, of the Knema-type; in male: (sub)sessile (exceptionally peduncle up to 2 mm long), simple or 2-4-branched tubercle-like, scar-covered brachyblasts to 4(-10) mm, flowers in sub-umbels of (2-)5-10(-15), buds usually of variable sizes; bracts minute, early caducous; in female: brachyblasts l(-2) mm long, few-flowered; flowers with (sparse) hairs 0.1 mm. Male flowers: pedicel slender, 1-7 mm long, bracteole 1-1.5 mm, persistent; buds long-ellipsoid to oblong, 4-6 by 1.5-2.5 mm, somewhat narrowed towards the blunt apex, cleft c. 1/4-1/3, lobes 0.2(-0.3) mm thick. Androecium slender, 3.5-5 mm; androphore 1.5-2 by 0.4-0.5 mm, glabrous; synandrium 1.8-2.5(-0.3) by 0.5-0.8 mm, thecae 10-14, (sub) contiguous, sterile apex ± blunt, 0.1-0.2 mm. Female flowers: pedicel 1-2 mm long; buds ovoid or conical, narrowed towards the apex, 3-4.5 by 2-3 mm, cleft c. 1/3; ovary narrowly ovoid, 2.5-3.5 by 1.5-2 mm, hairs less than 0.1 mm, stigma 1 mm, deeply and broadly 2-lobed. Fruits 1-3 per infructescence, short-or long-ellipsoid, 1.3-2.6(-3) by 0.9-1.3 cm, apex rounded or subacute, usually to 1 mm beaked, hairs scurfy, c. 0.2 mm or less (largely glabrescent in subsp. australiana); pericarp 1-2 (-3) mm thick; seeds 11-20 mm long; fruiting pedicel slender, 1-5 mm long.
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