Prunus angustifolia is a species of a tree in the Rosaceae family that is commonly known by several synonyms. One of the most common synonyms is the Chickasaw plum, which refers to the tree's historical prevalence in Native American territories of the southern United States. Other synonyms for Prunus angustifolia include sandhill plum, mountain cherry, and Osage plum. These names all refer to different physical or geographic aspects of the tree. The sandhill plum refers to the tree's preference for sandy soil while the Osage plum refers to its historical use by the Osage tribe. While these synonyms all refer to the same species of tree, they help to highlight different aspects of its history and ecology.