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Gamophyceae: Zygnematales: Desmidiaceae

 Euastrum ozense
Hirano

Euastrum ozense Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body 125-137 μm long, 48-50 μm wide, L/W=2.5, isthmus 19-20 μm wide; (Illustrations of The Japanese Fresh-water Algae, 1977).

Euastrum ozense Hirano, cell body 127 μm long, 60 μm wide, L/W=2.1, isthmus 21 μm wide, x 640, marsh pond near Chigo-ike marsh (or Yakebitai marsh) at the top of Yakebitai mountain, Shiga highland (Oku-shiga highland), Yamanouchi town, Nagano Pref., Japan, October 9, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum ozense Euastrum ozense

Images of collecting locality: marsh pond near Chigo-ike marsh (or Yakebitai marsh) at the top of Yakebitai mountain, Shiga highland (Oku-shiga highland), Yamanouchi town, Nagano Pref., Japan, October 9, 2006 by Y. Tsukii

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