Gamophyceae: 
Zygnematales: Desmidiaceae or Closteriaceae
Closterium intermedium
Ralfs var. intermedium
 
Species [var. intermedium]: 
Cell body slightly curved, central region not swelled (inner side slightly concave), 
both ends broadly truncated with slanted edges, 
76-(200-300)-470 μm long, 
14-(17-22)-25 μm wide, L/W=6-15; 
cell wall brownish in color, with bands and lined (6-10 lines within 10 μm)
 
[var. hibernicum]: 
Cell body straight at central region, 200-(350)-384 μm long, 
14-(26) μm wide, L/W=; 
(Illustrations of The Japanese Fresh-water Algae, 1977).
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Closterium intermedium Ralfs var.intermedium ?, 
cell body 310 μm long, 22 μm wide, L/W=14.1, 
x 640, No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii
 50 μm
 100 μm
 150 μm; x 400 : 
 31 μm
 63 μm
 94 μm; x 640
Closterium intermedium Ralfs var.intermedium, 
cell body 255 μm long, 19 μm wide, L/W=13.4, 
x 400, x 640, No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii
 50 μm
 100 μm
 150 μm; x 400 : 
 31 μm
 63 μm
 94 μm; x 640
Images of collecting locality: 
No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii
Please click on images for viewing enlarged.
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