Abstract
Five species found in the phytoplankton collected in the area of Kobe city are reported here as new to Japan. They are : 1. Oscillatoria kawamurae NEGORO, 2. Scenedesmus diagonalis FANG, 3. Desmidium baileyi NORDST. forma tetragonum NORDST., 4. Streptonema trilobatum WALLICH, and 5. Spirulina princeps W. et G. S. WEST. The former four species are interesting with respect to their rather rare distribution.
