Of the 23 genern and 49 species of algae identified from a polluted pond, Yar Hussain, District Mardan during 1979-1980, Cyanophyceae (30 spp.) were dominant followed by Bacillario- phyc‹ te (15 spp.), Chloropfiyceae (3 spp. j anal Fiuglenophyceae (one sp. . I'requenc y, constancy and eol.ogical status of each species is preserrted.
