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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum incisum
Wolle

Staurastrum 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: with arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Species: Cell body 29 μm long, 37 μm wide, constriction 9 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum incisum Wolle ? or similar species, cell body 32 μm long, μm wide, L/W=, isthmus μm wide, x 640, No.3, Shijuhachi-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, July 20, 2008 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum

Images of collecting locality: No.3, Shijuhachi-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, July 20, 2008 by Y. Tsukii

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