Japan Flora: Small tree with glabrous, reddish brown branches and scattered lenticels; leaves membranous, ob­long or ovate-oblong, 7-12 cm. long, 3-5 cni. wide, acuminate, acute to rounded and sometimes slightly oblique at base, entire or obsoletely undulate, glabrous on upper side, glaucous, thinly pubescent near axils of nerves beneath, the lateral nerves 7-9 pairs, the petioles 6-10 mm. long, glabrous; cymes terminal in upper axils, glabrous, few-flowered, short-peduncled, the pedi­cels 2-4 mm. long; flowers 3-3.5 mm. across; calyx-lobes deltoid, rather acute; fruit narrowly oblong, 7-8 mm. long. June. Mountains.

Honshu (Rikuchu, Shinano, Echigo Prov. and westw.), Shikoku, Kyushu; rare. s. Korea and China.