Common myrrh, Commiphora myrrha, or gum myrrh, is a small, very piney tree, about 16 feet tall, in the Burseraceae family with light bark and knotted branches, few leaves and small white flowers. It thrives in thin soil, primarily in areas with limestone. It is one of the primary trees used in the production of myrrh, a resin made from dried tree sap. The tree is native to Oman and Yemen, and to Africa. Our oil comes from trees grown in Somalia. When the bark is cut, the gum resin exudes as a pale yellow liquid, which dries into reddish-brown lumps the size of a walnut from which the oil is distilled.