Osage orange, (Maclura pomifera), also called bowwood, French bois d’arc, thorny
tree or shrub native to the south-central United States, the only species of its genus
in the family Moraceae. The Osage orange is often trained as a hedge; when
planted in rows along a boundary, it forms an effective spiny barrier. The tree also
serves as a windbreak. Its hard yellow-orange wood, formerly used for bows and
war clubs by the Osage and other Native American tribes, is sometimes used for
railway ties and fence posts. The wood yields a yellow dye.