Ethnobotany is the study of interrelations between humans and plants; however, current use of the term implies the study of indigenous or traditional knowledge of plants. It involves the indigenous knowledge of plant classification, cultivation, and use as food, medicine and shelter. However human is great factors of Ethnobotany
Anthropology is the key to regional ethnobotany. In North America, the perfect example is Medicinal Plants of Native America. In it, Daniel Moerman compiles all the existing ethnographies in N. America into a tremendously useful 2 volumes.
Ethnobotany is a distinct branch of natural science dealing with various aspects such as anthropology, archaeology, botany, ecology, economics, medicine, religious, cultural and several other disciplines. Ethnobotany is usually defined as anthropological approach to botany. There are several methods of ethnobotanical research and those relevant to medicinal plants are archaeological search in literature, herbaria and the field studies.