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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum brebissonii
W. Archer in A.Pritchard
Syn: S. pilosum (Nägeli) Archer

Staurastrum brebissonii 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:

Staurastrum brebissonii W. Archer in A.Pritchard, cell body 42 μm long, 37 μm wide, isthmus 13 μm wide, L/W=1.1, x 640, used waterfield near Karakemi marsh (Yasaka village), Matsuzaki, Omachi city, Nagano Pref., Japan, April 24, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum

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