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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 ? μm long, 40 μm wide, L/W=, isthmus μm wide, short spines 2 μm long, x 640, Ikei-no-ike (pond), Nasu town, Tochigi Pref., Japan, September 3, 2006, collected by Eizaburo Tsukii, photo by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum brebissonii Staurastrum brebissonii

Staurastrum brebissonii (Nägeli) Archer, cell body 40 μm long, 45 μm wide, L/W=, isthmus 15 μm wide, short spines 2-3 μm long, x 640, Ikei-no-ike (pond), Nasu town, Tochigi Pref., Japan, September 3, 2006, collected by Eizaburo Tsukii, photo by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum brebissonii Staurastrum brebissonii

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