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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 50 μm long, 50 μm wide (including spiny projections, 2 μm long), L/W=1.0, isthmus 10 μm wide, x 640, Maeyama marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 17, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum brebissonii Staurastrum brebissonii Staurastrum brebissonii Staurastrum brebissonii

Images of collecting locality: Maeyama marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 17, 2007 by Y. Tsukii

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