Trees to 20 m tall; bark gray; crown large and spreading. Branchlets brown, terete, pilose and glabrescent or tomentose. Buds ovoid, large, ca. 2 cm, usually glabrous, rarely downy, ± viscid. Petiole terete, 5-12 cm, downy; leaf blade ovate-cordate, 10-15 × 8-12 cm, abaxially grayish green, downy at least along veins, adaxially dull green, glabrous, base cordate or rounded, margin glandular crenate, densely ciliate, apex acute to acuminate. Male catkin ca. 6 cm; rachis glabrous. Female catkin to 22 cm; rachis glabrous or pubescent. Capsule glabrous or pilose, 4-valved; stipe 5-10 mm or capsule subsessile. Fl. May, fr. Jun. 2n = 38.
Mixed forests with oak, deodar and pine, 1200-3000 metres. Secondary forests and by streams, usually on light soils.
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