A preliminary checklist of pteridophytes of Dibang Valley District, Arunachal Pradesh, India

This paper is an enumeration of the species of pteridophytes collected from the very little known Dibang Valley district of Arunachal Pradesh, N.E. India, mostly by the first author. 133 species and subspecies, assigned to 50 genera and 22 families, are listed here. Comments on their habitat and distribution are made. The present checklist is intended to be a base-line towards the preparation of a detailed pteridophyte flora of Dibang Valley district.