Natural resources and associated biological diversity provide the basis of livelihood for humans, particularly in rural areas and mountain regions around the world. Over centuries, indigenous peoples, traditional societies and local communities have developed their own specific knowledge regarding plant use, management, and conservation. The history of plant use by humans as food and to treat diverse ailments dates back to ancient civilizations. Even though the advent of allopathic medicine has somehow minimized the role of medicinal plants in favor of synthetic drugs, a number of modern drug...