Japan Flora: Shrub with rather stout glabrous often glaucous loosely prickly branches, the prickles spreading, flattened, slighdy curved; leaves peltate, ovate-orbicular, cordate, 10-25 cm. long, 7-20 cm. wide, shallowly 5-lobed, the lobes acuminate, toothed, the nerves beneath with spreading hairs, the stipules 10-15 mm. long; receptacle densely short-pilose; flowers glabrous, solitary on short branchlets; calyx-segments narrowly ovate; fruit short-cylindricj about 4 cm. long; fruitlets very many, densely spreading-puberulent; stones prominently pitted. May-June. Mountains.

Honshu (Mino, s. Shinano, and Echizen Provs. and westw.), Shikoku, Kyushu; rather rare.