10 . R. rugosa Thunb .,

EL Jap. 213 (1784).

Stems up to 2-5 m, densely tomentose when young. Prickles hairy, at least at the base, straight, mixed with dense acicles. Leaflets 5-9, 20-50 x 18-25(^10) mm, ovate to elliptical, usually green and shiny above, thick, rugose. Flowers 1-3. Bracts large, enclosing the pedicels. Pedicels usually densely tomentose. Petals (25-)30-45(-50) mm, purplish-red, rarely white. Fruit depressed-globose, with a well-developed neck below the disc, glabrous, scarlet. 2"=14. Cultivated for ornament and for hedges; naturalized in parts of N., W. & C. Europe. [Au Br Da Fe Ga Ge Hb Ho Hu No Po Rm Su.] (E. Asia.)