Alstonia, also known as devil tree or Indian devil tree, is a genus of tropical evergreen trees native to Southeast Asia, Australia, and the Indian subcontinent. Its distinctive white latex sap has been used in traditional medicine for treating various ailments, earning it the nickname “dita bark.” Alstonia trees typically grow in dense forests and are valued for their timber, which is used in construction and furniture making. Some species also have cultural significance, featuring in folklore and religious rituals.