Japan Flora: Gla­brous deciduous tree, with grayish brown slender branches; leaves membranous, elliptic, ovate, or oblong, 4-10 cm. long, 2.5-5 cm. wide, acuminate or abruptly so, rounded at base, with short obtuse and mucronate teeth on margin, sparsely puberulous on upper side, paler and  often spreading-pilose, especially on the nerves beneath, the petioles 7-10 mm. long; flowers white, 1-3 on slender peduncles 2.5-3.5 cm. long, the pedicels 1-2 cm. long; calyx-lobes semirounded, ciliolate; petals about 2 mm. long; stamens shorter than the petals; fruit pendulous, globose, about 4 mm. across, the pyrenes smooth.  June-Aug. Mountains;

Honshu, Shikoku, Kyushu.

var. glabra Okuyama. Leaves glabrous beneath. Honshu (n. distr.).