Gamophyceae: 
Zygnematales: Desmidiaceae or Closteriaceae
Closterium intermedium
var. hibernicum W. et G.S. West
 
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 var. hibernicum W. et G.S. West, 
cell body 350 μm long, 30 μm wide, L/W=, 
x 200, x 400, x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, June 17, 2006 by Y. Tsukii
 50 μm
 100 μm
 150 μm; x 400 : 
 31 μm
 63 μm
 94 μm; x 640
Closterium intermedium var. hibernicum W. et G.S. West ?, 
cell body 420 μm long, 34 μm wide, L/W=12.4, 
x 200, x 400, x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, June 17, 2006 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  μm long,  μm wide, L/W=, 
x 200 (?), Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, June 17, 2006 by Y. Tsukii
Images of collecting locality: 
No. 1, 2, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, June 17, 2006 by Y. Tsukii
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