 
 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Neospongiococcum viridis De Bary: Unicells; cell body spherical, 70-200 μm in diam.; many chloroplasts disc-shaped, located at periphery of the cell (Illustrations of the Japanese fresh-water algae, 1977).