Trees to 20 m tall. Bark thick. Current year branchlets puberulent when young, soon glabrescent, white lenticellate. Petiole 1.5-2.5 cm, glabrous; leaf blade oblong, 7-12 × 3-4.4 cm, leathery, abaxially yellowish green when dry, adaxially green, both surfaces glabrous, secondary veins 6 or 7 on each side of midvein, secondary and reticulate veins visible on both surfaces, base cuneate and decurrent, margin basally entire and undulate crenate on ± apical 1/2, apex acuminate. Flowers solitary or several on a short raceme, ca. 3 cm in diam. Pedicel 4-5 cm, puberulent; bracteoles 2, close to calyx, caducous. Sepals persistent, semiorbicular, ca. 4 × 5 mm, outside glabrous or puberulent, inside sericeous, margin ciliolate. Petals white, broadly obovate, ca. 1.5 × 1 cm, outside basally puberulent, apex rounded. Stamens 5-8 mm; filaments distinct. Ovary tomentose, 5-loculed; style 6-7 mm; stigma 5, capitate. Capsule subglobose, 1.6-2 cm in diam., 5-loculed with 2 or 3 seeds per locule; pericarp woody, splitting into 5 valves. Seeds together with wing 6-8 × 4-5 mm. Fl. Dec-Feb, fr. Jul-Oct.
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