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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum lunatum
Ralfs

Staurastrum lunatum 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. connatum;

Staurastrum lunatum Ralfs, cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, No.1, Dojo-ike (pond), Norikura highland, Azumi, Matsumoto city, Nagano Pref., Japan, November 4, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum lunatum Staurastrum lunatum Staurastrum lunatum Staurastrum lunatum Staurastrum lunatum Staurastrum lunatum

Images of collecting locality: No.1, Dojo-ike (pond), Norikura highland, Azumi, Matsumoto city, Nagano Pref., Japan, November 4, 2007 by Y. Tsukii

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