Trees to 18 m tall; trunk to 30 cm d.b.h.; bark of young trees bluish gray, becoming bluish white; crown narrowly oblong. Branches spreading; branchlets dull purplish brown, at first pubescent, glabrescent. Buds ovoid, slightly viscid, shiny; scales ciliate at margin. Petiole laterally flattened, terete near base, 1.5-5(-6) cm, pilose, with 2 large, flattened glands at apex; leaf blade broadly ovate, red when young, 3-10 × 3-8 cm, both surfaces pilose along veins, later glabrous, abaxially greenish, adaxially dark green, base shallowly cordate or rounded to rounded-cuneate, margin remotely glandular sinuolate-serrate, apex shortly acuminate. Fruiting catkin ca. 10 cm. Capsule 2-valved.
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