Trees 20-25 m tall. Current year branchlets purplish red, glabrous or glabrescent; terminal buds grayish white sericeous. Petiole 1.5-2 cm, pubescent or glabrescent; leaf blade elliptic, 10-18 × 4-9 cm, thinly leathery, abaxially pale green, pubescent along reddish midvein, and becoming pale brown when dry, adaxially dark green, shiny, and glabrous, secondary veins 10-12 on each side of midvein and slender, secondary and reticulate veins raised on both surfaces, base broadly cuneate to subrounded, margin serrate essentially along whole length, apex abruptly acute to acuminate. Flowers solitary, ca. 6 cm in diam. Pedicel 1.5-2 cm, velutinous, thickened toward apex; bracteoles 2, caducous, broadly obovate, 10-12 × 8-9 mm, puberulent. Sepals semiorbicular, ca. 4 × 6 mm, outside velutinous, margin fringed serrulate. Petals white, broadly obovate, 2.5-3 cm, outside basally velutinous. Stamens 1-1.5 cm. Ovary yellowish tomentose; style glabrous. Capsule globose, 3-3.5 cm in diam.; pericarp woody, splitting into 5 valves. Seeds together with wing 1.2-1.6 × 0.8-1 cm. Fl. Jun-Jul, fr. Oct-Dec.
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