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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum echinatum
Brébisson

Staurastrum echinatum Subgenus: lacks arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Section [Raphidiastrum]:
Species: Cell body 23.7 μm long, 23.7 μm wide, isthums 10.8 μm wide, 8 short spines at each side of trianglur semicell in top view (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum echinatum Brébisson, cell body μm long, μm wide, x 640, Senjo-ga-hara (marsh), Nikko city, Tochigi Pref., Japan, September 2003 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum echinatum Staurastrum echinatum Staurastrum echinatum Staurastrum echinatum

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