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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum asterias

Staurastrum asterias 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 asterias Nygaard var asterias, cell body μm long, μm wide, x 640, O-ike (pond), O-ike park, Yabuki town, Fukushima Pref., Japan, August 2003, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum asterias Staurastrum asterias Staurastrum asterias Staurastrum asterias

Staurastrum asterias Nygaard var asterias, cell body μm long, μm wide, with 6 arm-like projections, x 640, O-ike (pond), O-ike park, Yabuki town, Fukushima Pref., Japan, August 2003, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum asterias Staurastrum asterias Staurastrum asterias

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