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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)
Similar species -- >> Tetraedron limneticum;

Staurastrum brachiatum Ralfs, similar to Tetraedron limneticum but shows binary division, cell body 18 μm long, 10 μm wide (excluding arms), 30 μm long, 33 μm wide (including arms), x 640, Ukishima marsh (or bog), Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, July 3, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum Staurastrum

Staurastrum brachiatum Ralfs, cell body 35 μm long, 35 μm wide, L/W=1.0, isthmus 8 μm wide, x 640, Ukishima marsh (or bog), Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, July 3, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum
Cell body 25 μm long, 30 μm wide, L/W=0.8, isthmus 9 μm wide, x 640
Staurastrum Staurastrum Staurastrum

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