Catharanthus

Catharanthus is a genus of flowering plants in the family Apocynaceae. Like the genus Vinca, they are known commonly as periwinkles.[3] There are eight known species. Seven are endemic to Madagascar,[4] though one, C. roseus, is widely naturalized around the world.[2][5] The eighth species, C. pusillus, is native to India and Sri Lanka.[6] The name Catharanthus comes from the Greek for "pure flower".[7]