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Gamophyceae: Zygnematales: Desmidiaceae

 Euastrum verrucosum
Ehrenberg ex Ralfs 1848

Euastrum verrucosum Subgenus: Atomum (Apical area slightly depressed)
Section: Retusa (Cell body large; granulated dome(s) at the center of each semicell )
Species: Cell body (73-95)-114 μm long, (65-77)-92 μm wide, constriction (14-21)-22 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

Euastrum verrucosum Ehrenberg ex Ralfs 1848 var. verrucosum, cell body 75 μm long, 60 μm wide, L/W=1.3, isthmus 18 μm wide, x 640, rice field, near Ichinoseki Railroad Station, Ichinoseki city, Iwate Pref., Japan, July 24, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum verrucosum Euastrum verrucosum Euastrum verrucosum
Cell body 85 μm long, 65 μm wide, L/W=1.3, isthmus 18 μm wide, x 640
Euastrum verrucosum Euastrum verrucosum
Cell body 82 μm long, 68 μm wide, L/W=1.2, isthmus 20 μm wide, x 640
Euastrum verrucosum Euastrum verrucosum Euastrum verrucosum
Cell body 80 μm long, 70 μm wide, L/W=1.1, isthmus 20 μm wide, x 640
Euastrum verrucosum Euastrum verrucosum Euastrum verrucosum Euastrum verrucosum Euastrum verrucosum

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