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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 (or E. affine or E. humerosum ?), cell body 135 μm long, 62 μm wide, L/W=2.2, isthmus 20 μm wide, x 640, Shibu-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 19, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum ozense

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