Traditional medicine has a long history. It is the sum total of the knowledge, skills and practices based on the theories, beliefs and experiences indigenous to different cultures, whether explicable or not, used in the maintenance of health, as well as in the prevention, diagnosis, improvement or treatment of physical and mental illnesses. The book contain the detail information related to Pharmacognostic, Phytochemical and Pharmacological studies mainly performed to establish the medicinal activity of plants.