Japan Flora: Glabrous deciduous spiny shrub; leaves elliptic or narrowly oblong, 2-4 (-6) cm. long, 1-2 (-3) cm. wide, entire, short-petiolate; flowers pale purple or white, 1-1.5 cm, long, with darker striations near base, the pedicels slender, nearly as long as the flowers; stamens exserted, the filaments densely bearded near base; fruit narrowly ovoid-ellipsoid, about 1.5-2 cm. long, red. Aug.-Nov. Thickets and riverbanks in lowlands.