Tree 3-8 m high, sometimes to 15(-35) m high, the trunk 5-35 cm in diam, the branchlets angulate, striate, glabrous, often grayish. Leaves glabrous, the petioles 2.5-11 cm long, slightly pulvinate at the apex; blade narrowly elliptic, elliptic or ? ovate, obtuse to rounded at the base, long-acuminate at the apex, the margins entire to usually undulate, 10-31 cm long and 5-11 cm wide, papyraceous, more or less shiny above, paler beneath, the costa prominent beneath, the secondary veins slightly prominent beneath. Inflorescences axillary and terminal, paniculate, to 22 cm long, the rachis glabrous. Flowers white, the pedicels angulate, to 1.5 cm long, glabrous, more or less ? shining; sepals ? obovate or largely obovate, cucullate, reflexed at anthesis, 6-9 mm long and 4.5-5.5 mm wide, glabrous or inconspicuously puberulous and shining outside, caducous; petals elliptic to narrowly elliptic, obtuse to more or less rounded at the apex, + undulated along the margins, 9-12 mm long and 2.5-5 mm wide, glabrous, shining outside; stamens 26-40, the filaments scarcely connate at the base, unequal, 2-4.5 mm long, glabrous or sparsely and inconspicu-ously puberulous, the anthers ? oblong, emarginate at the base, slightly bifid at the apex, ca 3.5-4.2 mm long, glabrous or sparsely and inconspicuously puberulous at both ends; ovary very shortly stipitate, the stipe ca 0.5 mm long or less, ovoid, densely appressed-soft-echinate, the bristles minutely puberulous; style 5-6 mm long, minutely puberulous especially on the lower half, the stigma shorty 3-lobulate. Capsule long surmounted by the persistent style, echinate, to 1.5 cm in diam (without bristles), the pericarp rugose, shiny, and inconspicuously puberulous, the bristles to 8 mm long and inconspicuously puberulous; seeds few-1, more or less angulate, to 7 mm long.
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