Arunachal Pradesh, being a largest state of Northeast India, harbours great number of plant species which are endemic to region. The diversity and endemism of state has kept it in the category of biodiversity hot-spot. Though, in recent past, numbers of plant species are being listed as rare, endangered and threatened because of increasing threats from anthropogenic and other natural factors.

Arunachal Pradesh, falling under Easter Himalayan region one of the global mega-diversity centers, is a botanical paradise and the home of 110 ethnic communities (tribes) most of which are still forest dwellers and so diverse that they can not understand each others language. Hindi is gradually becoming popular among the persons, who are near townships.