Japan Flora: Perennial herb with woody base, the prickles very slender, spreading, bristlelike, the shoots radical, at first short, erect, afterward elongate, arcuate and decumbent, prickly, the flowering branchlets in the lower axils of the shoots, erect, rather elongate, thinly prickly or sparingly short-pubescent; leaflets 5, pedately ar­ranged, narrowly rhombic-obovate, acuminate, cuneate at base, doubly incised-toothed, sometimes scattered appressed-pilose on upper side and on nerves beneath, green, the stipules 6-8 mm. long, lanceolate, acuminate; flowers 1 or 2, terminal, nod­ding, white; calyx 15-20 mm. long, short-pubescent and prickly, thinly mixed with glandular-hairs, the lobes elongate above; fruit red, the stones about 2.5 mm. long, irregularly and obliquely rugose. May-July. Woods in high moun­tains.

Honshu (n. and centr. distr.).