Japan Flora: Glabrous unarmed or very sparingly prickly shrub with elongate branches; leaves ovate or elliptic, 6-10 cm. long, 4-6 cm. wide, obtuse to acute, rounded to shallowly cordate at base, usually undivided, with shallow teeth; flowers solitary on a short fertile branchlet, the pedicels rather slender, 1-15 cm. long; calyx with shallowly cup-shaped tube, the seg­ments narrowly ovate-deltoid, acuminate, 6-10 mm. long, white-tomentose on margin and on inner side; fruit globose; Stones pitted.

Kyushu (Yakushima and Tanegashima). Ryukyus and s. China.

var. chaetophorus Koidz. Prickles distinct; leaves 3-lobed. Kyushu (Oosumi Prov.)