Trees, to 27 m tall, d.b.h. to 50 cm, deciduous. Bark dark grayish brown to gray, longitudinally fissured, slightly longitudinally exfoliating in flakes. Branchlets pale brownish gray, grayish brown, or reddish brown, pubescent when young, glabrate or glabrescent, unwinged. Winter buds brown, ovoid-orbicular to elliptic; inner bud scales pubescent. Petiole 2-5 mm, glabrous or pubescent; leaf blade obovate, obtriangular-elliptic, or long obovate-orbicular, 7-18 × 4-14 cm, abaxially pubescent, adaxially hirsute but sparsely so late in season, base oblique, margin ciliate and deeply doubly serrate, apex ± truncate, abruptly caudate-acuminate, and often with 1-3 caudate lobes on each side, or sometimes apex rounded; secondary veins 10-17 on each side of midvein. Inflorescences fascicled cymes on second year branchlets. Perianth campanulate, 5-lobed, glabrous or tips of lobes ciliate. Samaras tan or pale green, elliptic to orbicular-elliptic, 1.5-2 × 1-1.4 cm, glabrous except for pubescence on stigmatic surface; stalk shorter than perianth, glabrous; perianth persistent. Seed at center or slightly toward base of samara. Fl. and fr. Apr-May. 2n = 28.