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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum tetracerum
Ralfs

Staurastrum tetracerum 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 tetracerum Ralfs ?, cell body 19 μm long (excluding arms), 33 μm long (including arms), 40 μm wide (including arms), x 640, Shakujii Park, Nerima-ku, Tokyo, Japan, November 2001 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum

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