Japan Flora: Deciduous shrub; leaves thinly chartaceous, broadly deltoid-obovate, often 3-lobed, 8-12 cm. long, 7-10 cm. wide in the divided ones, 3-5 cm. wide in the simple ones, glaucescent and glabrous beneath except for spreading hairs on the nerves, 3-nerved from the base, the lobes ovate, acuminate, the petioles 10-20 mm. long; inflorescence short-peduncled, the pedicels thickened in fruit, 8-12 mm. long; fruit globose, about 12 mm. across. Apr. 

Honshu (centr. distr. and westw.), Shikoku, Kyushu; rather common in mountains. China.