The Rosy Periwinkle (Catharanthus roseus) or Vinca rosea as it was known earlier, is a native of Madagascar and is found commonly growing around human habitations in India. This plant is considered to be highly medicinal and was known to African tribals for various cures. In the modern day it is used to cure certain types of cancer in children. The alkaloids present in the flower, vincristine and vinblastine, are used in chemotherapy for childhood leukemia. The plant is a known hallucinogen and is toxic if consumed orally. Shot at Masinagudi.