Japan Flora: Spiny deciduous much-branched shrub with straight ascending spines 3-8 mm. long, the branches pubescent while young; leaves cuneate, 2.5-7 cm. long, 1-4 cm. wide, obtuse, slightly appressed-pubes- cent while young, often glabrate on upper side, shallowly to deeply 3-lobed, irregularly incised or toothed, sometimes en­tire, paler beneath, sessile or the petioles to 3 cm. long; in­florescence 2- to 6-flowered, terminal on short branches, sessile, pubescent; flowers about 18 mm. across; calyx-teeth spreading, ovate, subacute; petals 5, suborbicular, white; styles usually 5; fruit subglobose, red, 10-12 mm. across. Apr.-May. Only cultivated. China and Mongolia.

f. lutea Matsum. Fruit yellow.