Pteridophytes are distributed in all the phytogeographical zones of India ranging from aquatic to alpine habitat where they grow as Hydrophyte, Mesophyte, Lithophyte, Epiphyte, Hemi epiphyte, Climbers etc. Present study founds the habitat of pteridophytes in riverine forests, forest floors, on slopes, grasslands, on rocks and crevices, on open walls and stone boulders etc. The study is carried on the area of West Karbi Anglong district of Assam in which major part of the area is hilly and some parts with plains and river valleys. The present study is focused on Fern diversity where 52 species were collected belonging to 31 genera under 20 families.