Abstract

Indigenous flora of Doon valley in Northwest Himalaya in the Indian subcontinent, have been subjected to dramatic alteration due to the deliberate and incidental introduction of exotic species from various parts of the world. Human depend heavily on non-native species for food, fodder, timber, medicine etc. Thus, the present communication deals on some cultivated exotic tree species of Doon valley with their origin and ethno- botanical uses. During the study 18 exotic tree species belongs to 14 families was reported which are mostly cultivated as food, fodder timber and medicine purposes in Doon valley.

Key words: Invasive, medicinal, native, socio-economical.