Algae are heterogenous, polyphyletic assemblage of very simple, water loving, autotrophic organism having no sterile layer of jacket-cells around their reproductive organs and lacking true embryogenasis. As primary producers, they are an important component of aquatic ecosystem, being inhabitants of moist freshwater, brakish water and marine environments of our biotope. The emerging picture of the freshwater algal flora of Pakistan revealed lack of information about detailed taxonomic description and systematic account of green algae from this area. Therefore, a wide-range research program...