This thoroughly revised edition, besides retaining almost all topics of the first edition, now also discusses topics like economic importance of pteridophyta, some characteristic features of pteridological divisions, some more Rhynophytes, trends of evolutionary specialization in Psilophytes, a note on Silurian and pre-Silurian plants, affinities of Psilotales, Protolepidodendrales, several Lepidodendrales, Pseudoborniales, Botrychium, Helminthostachys, systematic position of Ophioglossales, fossil Osmundales, Gleicheniaceae, Schizaeaceae and about a dozen more families along with Regnellidium and Pilularia. In addition, a separate chapter on gametophytes in pteridophyta has also been provided. This is the only book by any Indian author, recommended in the list of Suggested Readings of recently introduced UGC Model Curriculum for BSc (Gen.) students. This carefully organised, student-oriented text now provides a comprehensive and coherent account of pteridophyta for undergraduate, honours and postgraduate students of almost all Indian universities. In this second edition, an attempt has been made to cover entire course of reading related to pteridophyta. The book is profusely illustrated with about 300 line diagrams. About The Author: O P Sharma (PhD Meerut University) has over 39 years of teaching and research experience. He has written 29 books and has published over 30 research articles in various internationally reputed journals. He has recently revised Economic Botany, an internationally renowned text by Professor Albert F Hill (Harvard University, US). Encouraging reviews of his books have been published in some reputed scientific journals, and his books on Practical Botany have received appreciation from some eminent bo