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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum oxyacanthum
Archer

Staurastrum Genus: Cell body short, radiate in shape; apical view of the cell, triangular, polygonal, ellipsoidal or spindle-shaped; zygospores formed outside of mother cells (Illustrations of The Japanese Fresh-water Algae, 1977)
Subgenus: with arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Species:

Staurastrum oxyacanthum Archer, cell body 30 μm long, 55 μm wide, L/W=, x 640, a water reservoir (pond) near Yamaguchi university, Yamaguchi city, Yamaguchi Pref., November 21, 2004, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum oxyacanthum Staurastrum oxyacanthum Staurastrum oxyacanthum
Staurastrum oxyacanthum Staurastrum oxyacanthum Staurastrum oxyacanthum Staurastrum oxyacanthum Staurastrum oxyacanthum

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