Buckthorn (Frangula Alnus) is a tall shrub or tree with smooth, alternately arranged branches covered with white lentils. The leaves are alternate, shiny, smooth. The flowers are small, greenish-white, collected in bunches in the axils of the leaves. The fruit is a drupe that changes color (green, red and black), containing two flat bones with a coracoid outgrowth inside. The plant blossoms in May-June, bears fruit in September. It is found in the forest and forest-steppe zone of Europe, in the central regions of Western Siberia, in the north of Asia Minor.