Pteridophyta is a small but most interesting group of plants which attracts botanists from all over the world due to their occupying a pivotal central position in the world higher plants. They are first land plants and occupying position between Bryophytes and Gymmosperms. They originated during Silurian period and comprised of well developed sporophyte generation with vascular strands. Pteridophytes are spore bearing plants and complete their life-cycle into two morphologically and cytologically distinct phases. Present book describes Pteridophytes of Nepal. Nepal is a country popularly known for its natural beauty and great cultural heritage. It is located between India and China. Nepal has a rich pteridophytic flora which attracts scientists time to time. This book is mainly designed to provide most fundamental knowledge of pteridophyta to Undergraduate and Post-graduate students. More emphasis is given to the basic structure, information and theories related to Pteridophytes. All possible efforts have been made to simplify the complicated processes so as to make it easily understandable. It is written in most simple and lucid language supplemented with well illustrated diagrams. This book is very useful for B. Sc. as well as M.Sc. students in understanding Pteridophytes