Genus: 
Species:  | 
Leptosira or Fritschiella ??, 
stock Giw-50, axenic culture with KCM and Hyponex (March 23 to March 30, 2002), 
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
 31 μm
 63 μm
 94 μm; x 640
Leptosira or Fritschiella ??, 
stock Giw-50, axenic culture with KCM & Hyponex (January 23 to March 3, 2003), 
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
 31 μm
 63 μm
 94 μm; x 640