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 300 μm long, 24 μm wide, L/W=12.5,
x 200, x 400, x 640, a pond near the entrance of climbing route to Omine mountain, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, May 25, 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 305 μm long, 22 μm wide, L/W=13.9,
x 400, x 640, a pond near the entrance of climbing route to Omine mountain, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, May 25, 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 293 μm long, 21 μm wide, L/W=,
x 400, x 640, a pond near the entrance of climbing route to Omine mountain, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, May 25, 2006 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Cell body 294 μm long, 21.5 μm wide, L/W=, x 200, x 400, x 640
Images of collecting locality:
a pond near the entrance of climbing route to Omine mountain, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, May 25, 2006 by Y. Tsukii
Please click on images for viewing enlarged.
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