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Gamophyceae: Zygnematales: Desmidiaceae

Euastrum ansatum
Ralfs var. ansatum

Euastrum ansatum Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)

Species [var. ansatum ]: Cell body medium in size, elongate pyramid-shaped, side margins cocaved, 87-95 μm long, 39-42 μm wide, L/W=2, isthmus 11-14 μm wide; cell wall dotted, with 5 bulges conspicous (2 central, 3 basal) (Illustrations of The Japanese Fresh-water Algae, 1977).


Euastrum ansatum Ralfs ansatum, cell body 100 μm long, 44 μm wide, L/W=2.4, isthmus 14 μm wide, x 640, Omine-numa (pond/marsh), Tsukiyono town, Gunma Pref., Japan, September 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum ansatum Euastrum ansatum

Euastrum ansatum Ralfs ansatum, cell body 100 μm long, 41 μm wide, L/W=2.4, isthmus 14 μm wide, x 640, Omine-numa (pond/marsh), Tsukiyono town, Gunma Pref., Japan, September 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum ansatum Euastrum ansatum


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