Trees (8-)15-30 m tall. Branchlets apically dark brown pilosulose, glabrescent. Petiole 1-2 cm; leaf blade obovate to obovate-oblong, 22-25 × 6.5-10 cm, papery, glabrescent, base cuneate, margin serrulate on apical half, apex abruptly acuminate; secondary veins 7-9 on each side of midvein, abaxially raised; reticulate veins conspicuous on both surfaces. Inflorescences axillary or ramiflorous, (15-)24-30 cm; rachis and pedicel pilosulose; bracts of flower pairs lanceolate, ca. 2 mm, pilosulose; floral bracts linear, 0.5-1 mm. Pedicels connate to middle, 6-7 mm, pilosulose. Perianth yellowish, 1.6-1.8 cm, glabrous. Anthers ca. 3 cm in diam., basally contracted into a short free filament, apex apiculate. Ovary glabrous. Fruit minutely verruculose; pericarp 1-1.5 mm, thickly woody. Fl. and fr. May-Sep.
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