Trees, 12-16 m tall; bark black-brown; branchlets grayish, glabrous. Petiole (2.5-)3-7 cm, pubescent or glabrous; leaf blade greenish abaxially, deep green adaxially, variable in shape, ovate-oblong, oblong, or slightly obovate, less often elliptic, (8-)9-14 × 4-6 cm, mostly 1.7-2.2 × as long as broad, thinly leathery, both surfaces glabrous or abaxially sparsely tomentose along veins, 3-veined at base, lateral veins 4 or 5 pairs, base rounded to cordate, margin remotely serrate, often coarsely so, apex obtuse, contracting abruptly to a short acumen to 1(-2) cm, or more rarely leaf apex acute. Inflorescence terminal, to ca. 10-flowered, 5-10 cm including flowers, pubescent to tomentose; bracts lanceolate to narrowly ellipsoid, 1-3 cm, papery, both surfaces sparsely to densely appressed hairy; flowers sweetly scented. Pedicels 1.2-3 cm, 2-bracteolate near middle; bracteoles opposite, narrowly oblong, 4-8 mm, papery, pubescent, glandular along margin toward base, ± persistent. Sepals broadly ovate, 1.5-2 cm, in older flowers longer and narrower, both sides yellowish tomentose, inside more densely so, base cordate when sepal erect, apex obtuse. Staminate flowers: stamens with filaments unequal in length, longest 1-1.5 cm, glabrous; anthers narrowly ellipsoid, 1-1.2 mm. Pistillate flowers: staminodes like stamens but much reduced; ovary oblong-ovoid, densely yellowish appressed-pubescent; placentas 3 or 4; styles 3 or 4, 0.5-1 mm, ± connate, densely pubescent as ovary, stigmas erect to reflexed, drying black, flattened, triangular, 2-3 mm, irregularly lobed, glabrous or abaxially pubescent. Capsule fusiform, slightly curved, 3-8 cm, tomentose; seed including wing 1-1.5 cm; wing oblong-obovate, asymmetric; seed proper ca. 5 mm. Fl. May-Jun, fr. Jul-Oct.
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