 
 
|  Genus: 
(Illustrations of The Japanese Fresh-water Algae, 1977). Species: | 
 50 μm
 50 μm
 100 μm
 100 μm
 150 μm; x 400 :
 150 μm; x 400 : 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
 
Images of collecting locality: 
waterfield between Kita-Omachi station and Nogu river, Omachi city, Nagano Pref., Japan, June 4, 2007 by Y. Tsukii
 
 
