Trees, to 18 m tall, d.b.h. to 80 cm, deciduous. Bark dark gray, grayish black, or brownish gray, irregularly longitudinally fissured, scabrous. Branchlets pale gray to gray, pubescent when young, sometimes with an irregularly longitudinally fissured corky layer, with pale yellow lenticels. Winter buds ovoid; inner bud scale margin long ciliate. Petiole 5-12 mm, glabrous or pubescent; leaf blade obovate, elliptic-obovate, ovate-oblong, or elliptic-ovate, 2-9 × 1.7-5.5 cm, abaxially sparsely pubescent and densely hairy along main secondary veins when young but glabrescent, adaxially pubescent and villous along midvein when young but glabrescent, base oblique, margin doubly serrate, apex acute to acuminate; secondary veins 9-19 on each side of midvein. Inflorescences fascicled cymes on second year branchlets. Perianth campanulate, 4-lobed, glabrous. Samaras tan, ± orbicular to obovate-orbicular, 1.1-1.6 × 0.9-1.3 cm, glabrous except for pubescence on stigmatic surface in notch; stalk shorter than perianth, 1-2 mm, pubescent; perianth persistent. Seed at or near center of samara. Fl. and fr. Feb-Mar.
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