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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum polymorphum
var. groenbladii Hirano

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 polymorphum var. groenbladii Hirano, cell body 16 μm long, 27 μm wide, isthmus 7 μm wide, x 400, x 640, Shimo-no-koike (small pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, September 26, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum Staurastrum

Staurastrum polymorphum var. groenbladii Hirano or simiar species, cell body 13 μm long, 18 μm wide, L/W=, x 640, Shimo-no-koike (small pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, September 26, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum polymorphum Staurastrum polymorphum Staurastrum polymorphum Staurastrum polymorphum

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