Abstract: Before summing up the essential points brought forward in the present paper,it seems desirable at the outset to circumscribe briefly the geographical boundary of the Himalaya.We all know that the Himalaya is an extraordinarily gigantic upheaval of the landmass in the concept of its geographical boudary.It has so far unwquivocally been recognized that the mountain range west of the great bend of the famous Tsangpo Gorge in southeastern Tibet running northwestwardly as far as the eastern boundary of Afghanistan and south of the Karakurun is the Himalaya proper,while the mountain range east of the Tsangpo Gorge remains in controversy as to its status.

Key words: Himalaya-polypodiaceous-concentration