Closterium intermedium Ralfs var.intermedium (or C. abruptum ?),
cell body 245 μm long, 17 μm wide,
x 400, x 640, Shimo-no-koike (small pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, September 26, 2004 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640