Trees 6-20 m tall. Branchlets glabrous; buds gray-white hairy. Petiole 1.5-5 cm; leaf blade dark greenish, elliptic, 10-20 × 5-11 cm, abaxially glabrous, 2 lateral veins 8-10 mm from margin, ascending less than 1/2 length of blade, lateral veins 5-7 pairs, base rounded, margin denticulate, apex acute. Cymes 2-5-flowered, ca. 3 cm. Sepals purplish pink, oblong, ca. 1 cm, hairy abaxially. Stamens of inner series shorter than sepals. Ovary glabrous. Capsule ca. 3.5 × 2.5-3 cm, wings 5-angled. Seeds ca. 1 cm.
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