[Wikipedia] Madagascar Native, Medicinal Uses: Catharanthus roseus, commonly known as bright eyes, Cape periwinkle, graveyard plant, Madagascar periwinkle, old maid, pink periwinkle, rose periwinkle,[2] is a perennial species of flowering plant in the family Apocynaceae. It is native and endemic to Madagascar, but grown elsewhere as an ornamental and medicinal plant. It is a source of the drugs vincristine and vinblastine, used to treat cancer.[3] It was formerly included in the genus Vinca as Vinca rosea. (link added by Mary Ann Machi)