Japan Flora: Large, much-branched shrub with much- flattened stipular prickles; stipules entire, glandular on mar­gin, the free portion linear-lanceolate; leaflets 9-19, ovate- oblong or oblong, 10-25 mm. long, 5-15 mm. wide, acute, serrulate with short-awned acute teeth, nearly glabrous on upper side, paler and prominendy pubescent especially on mid­rib beneath, the petioles and rachis short-pubescent; flowers solitary, terminal, pale pinkish, 5-6 cm. across, the pedicels stout, short, with needlelike prickles; calyx with densely prickly tube, the lobes broadly elliptic, often with a small appendage near base; fruit globose, about 2 cm. across. June.

Honshu (Sagami, Kai, and Suruga Prov.).