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Gamophyceae: Zygnematales: Desmidiaceae

 Euastrum spinulosum
var. inermius Nordstedt

Euastrum spinulosum Subgenus: Atomum (Apical area slightly depressed)
Section: Retusa (Cell body large; granulated dome(s) at the center of each semicell)
Species (var. inermius): Cell body 53-70 μm long, 47.6-59 μm wide, constriction 11-17 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

Euastrum spinulosum var. inermius Nordstedt ?, cell body 59 μm long, 55 μm wide, isthmus μm wide, x 400, x 640, Koshigaya, Saitama Pref., Japan, July 2001 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 spinulosum
Euastrum spinulosum Euastrum spinulosum Euastrum spinulosum Euastrum spinulosum Euastrum spinulosum

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