Japan Flora: bark dark chestnut-brown, the branchlets stout, glabrous, with viscid buds; leaves elliptic, ovate-elliptic or sometimes obovate-elliptic, 8-13 cm. long, 4-7 cm. wide, rounded or at least some of them subcordate at base, deep green and usually glabrous on upper side, glaucescent and glabrous beneath, with obliquely deltoid teeth, the petioles 1.5-3 cm. long, glabrous, reddish, with a pair of reddish sessile glands near the top; flowers 3-4 cm. across, in sessile umbels, glabrous, pink; calyx-lobes entire; drupe dark purple.  Apr.-May, Mountains;

Hokkaido, Honshu (centr. and n. distr.),  Sakhalin and Korea.

f. pubescens (Tatew.) Ohwi. Pubescent on lower leaf surfaces, petioles or pedicels, or on all of them.