Genus Catharanthus is a group of flowering plants native to Madagascar that have had a variety of common names over time. Some of these synonyms include Pestilence Plant, Madagascar Periwinkle, Vinca Rosea, and Old Maid. While it was formerly classified within the Vinca genus, it was reclassified in the 1980s due to genetic differences. The Catharanthus roseus species is known for its medicinal properties, and is used to treat high blood pressure and several types of cancer. The plant's alkaloids, such as vincristine and vinblastine, are used in chemotherapy and have proved effective in treating Hodgkin's disease and leukemia.