Japan Flora: Shrubs, the branches elongate, with rather stout flat prickles, densely pubescent when young with short soft spreading hairs, the flowering branchlets 2-5 cm. long, prickly; leaves membranous, elliptic-ovate or narrowly so, 4-10 cm. long, 2-4 cm. wide, abruptly acuminate, slightly cordate at base, very rarely obsoletely 3-lobed, irregularly toothed, with ascending short hairs on nerves above, with short spreading hairs and appressed pubescence beneath; flowers solitary, white, the pedicels 7-12 mm. long, densely short-pubescent; calyx 7-10 mm. long, appressed-pubescent, the tube rather broad, shallowly cup-shaped, slightly depressed in the center, the lobes broadly lanceolate, appressed-pubescent also on the inner side; petals about 10 mm. long; fruit globose, the fruitlets densely short-pubescent, the receptacle short-pubescent. Apr.-May.

Honshu (Suruga Prov. and westw.), Kyushu. s. Korea and China.