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Gamophyceae: Zygnematales: Desmidiaceae

 Euastrum gnathophorum
W. et G.S. West

Euastrum gnathophorum Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body 47-73 μm long, 34-36 μm wide, isthmus 11-14 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

Euastrum gnathophorum W. et G.S. West, cell body 65 μm long, 31 μm wide, L/W=2.1, isthmus 10 μm wide, x 640, No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum gnathophorum Euastrum gnathophorum Euastrum gnathophorum

Images of collecting locality: No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii

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