The Bryophyta (Gr. bryon-moss; phyton-plants) is represented by about 850 genera and more than 23000 species, which are cosmopolitan in their distribution. Important characteristic points of the bryophyta are as follows: 1. Occurrence: Majority of the plants are terrestrial, except a few, which occur in aquatic surroundings like Riccia fluitans, Ricciocarpus natans, Riella and Sphagnum. […]