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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum brachiatum
Ralfs

Staurastrum brachiatum Subgenus: With arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Species: Cell body 25-36 μm long, 25-36 μm wide (including spines), isthmus 8.4-9.7 μm wide; constriction medium, bay-opening large; (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum brachiatum Ralfs, similar to Tetraedron limneticum but shows binary division, cell body 30 μm long, 30 μm wide, spines very large, 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 Staurastrum Staurastrum Staurastrum Staurastrum Staurastrum Staurastrum Staurastrum Staurastrum

Staurastrum brachiatum Ralfs ?? (Glabriformes, Eustaurastrum), cell body 30 μm long, 32 μm wide, L/W=0.9, isthmus 10 μm wide, 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

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