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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum furcatum
f. spinosa Grönblad

Staurastrum forficulatum 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: lacks arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Species:
Similar species -- >> S. sexangulare;

Staurastrum furcatum f. spinosa Grönblad ?, cell body 28 μm long, 30 μm wide (excluding short spines), L/W=0.9, isthmus 10 μm wide, x 640, Tashirodaira marsh, Hakkoda mountain, Aomori city, Aomori Pref., Japan, July 17, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum furcatum Staurastrum furcatum Staurastrum furcatum Staurastrum furcatum

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