Frangula californica (Eschsch.) A.Gray, Gen. Amer. Bor. 2: 178 1849. (Syn: Endotropis oleifera Raf.; Rhamnus californica Eschsch.; Rhamnus purshiana var. californica (Eschsch.) Rehder); . Rhamnus californica (syn. Frangula californica), commonly known as coffeeberry and California buckthorn, is a species of flowering plant in the family Rhamnaceae, the buckthorns. It is native to the southwestern United […]