Downloaded from the Knowledge Bank, The Ohio State University's institutional repository

Four species of algae in the Chlorophyta and five in the Cyanophyta are newly reported for Western Lake Erie. Gongrosira stagnalis (G. S. West) Schmidle, collected from the basal fragments of old Cladophora, appears to be a new record for the United States. Nephrocytium obesum W. & G. S. West, which is reported as often having a shallowly scrobiculate wall, is unique and merits further intensive study. Algae that are new to the Island Region of western Lake Erie appear occasion-ally in teaching and research collections at Stone Laboratory, Put-in-Bay, Ohio. This report presents taxa obtained in this way that have not previously been reported. Two of these taxa are of particular interest. Radiococcus nimbatus (de Wildm.) Schmidle is of rare occurrence in the United States. Gongrosira stagnalis (G. S. West) Schmidle, which occurred as disc-like pads on the basal fragments of old Cladophora filaments, is probably a new record for the United States