Abstract
Water moulds were isolated from different ponds, ditches and lakes around Pune City. They were cultured and purified for indentification. Among all the isolated genera, Achlya was dominant followed by Saprolegnia. A new species of Saprolegnia, isolated from the lake is described in this paper based on remarkable morphological irregularities in zoosporangia, gemmae, oogonia, oospores and antheridia. It is compared with the allied species S. anisospora de Bary and S. diclina Humphrey.