Write about folk system of medicine.

Explanation

The rural communities of India are practicing this system of medicine through oral tradition without any authenticated written documents. Ministry of Environment and Forestry launched a programme of All India Coordinated Research project on ethanobotany to document the plants used as medicine by ethenic groups in India. About 8000 plants species have been documented as the result of this project.
Irulas, Malayalis, Kurumbas, Paliyans and Kannis are the tribal groups in Taml and Kannis are the tribal groups in Tamil Nadu, who are known for their medicinal knowledge. Some of important medicinal plants they use include keezhanelli and nilavembu, which are now brought for medicinal use.