Japan Flora: Shrub, the branches with rather flat prickles and glandular- pilose, often also soft-pubescent, the flowering canes short, prickly; leaflets 1-5, broadly lanceolate to ovate, 2-7 cm. long, 1-3 cm. wide, acute or acuminate, rounded to obtuse at base, doubly toothed, appressed-pubescent on midrib above and on nerves beneath while young, the petioles glandular-pilose, prickly and slightly pubescent; flowers 1-3; calyx and pedicels glandular-pilose, the calyx lobes ovate-deltoid, caudate, white- tomentose inside and on the margin; petals nearly orbicular, about 15 mm. in diameter; receptacles hairy near base; fruit­lets glabrous, aggregated in a broadly ellipsoidal head. Mar.-May.

Honshu (s. Kan to Distr. and Kii Prov.), Shikoku, Kyushu. s. Korea and Formosa.