Catharanthus roseus [Madagascar Periwinkle] is a species of Catharanthus native and endemic to Madagascar. Synonyms include Vinca rosea, Ammocallis rosea, and Lochnera rosea; other English names occasionally used include Cape Periwinkle, Rose Periwinkle, Rosy Periwinkle, and “Old-maid”.
It is an evergreen shrub or herbaceous plant growing to 1 m tall. The flowers are white to dark pink with a darker red center.
In the wild, it is an endangered plant; the main cause of decline is habitat destruction by slash and burn agriculture. However, it is widely cultivated and is naturalised in subtropical and tropical areas of the world.