Chlorophyceae
Unidentified sp. 
 
Genus: 
 
Species: 
 | 
Leptosira Borzi 1883 or Fritschiella Iyengar 1932 ??, 
cell body  μm long,  μm wide,
x 640, a pond near Asami-numa (Azami-numa), Iwajuku, Kasakake town, Gunma Pref., Japan, October 2001 by Y. Tsukii
 50 μm
 100 μm
 150 μm; x 400 : 
 31 μm
 63 μm
 94 μm; x 640
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