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Gamophyceae: Zygnematales: Desmidiaceae

 Euastrum bidentatum
Nägeli

Euastrum Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: (Illustrations of The Japanese Fresh-water Algae, 1977).

Euastrum bidentatum Nägeli, cell body 46 μm long, 31 μm wide, L/W=1.5, isthmus 5.5 μm wide, x 640, No. 2, Iroha-numa (marsh/bog), Zao mountain, Yamagata city, Yamagata Pref., Japan, August 2, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum Euastrum Euastrum Euastrum
Cell body (right) 45 μm long, 29.5 μm wide, L/W=1.5, isthmus 5.5 μm wide, x 640
Euastrum Euastrum

Euastrum bidentatum Nägeli or similar species ?, cell body 45 μm long, 30 μm wide, L/W=1.5, isthmus 6 μm wide, x 640, No. 2, Iroha-numa (marsh/bog), Zao mountain, Yamagata city, Yamagata Pref., Japan, August 2, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum Euastrum Euastrum

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