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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum wandae
Raciborski var. brevispinum Grönblad

Staurastrum wandae 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 wandae Raciborski var. brevispinum Grönblad, cell body 26 μm long, 23 μm wide (including spiny projections), L/W=1.1, isthmus 14 μm wide, x 640, No.6, a marsh pond at Sensho-ga-hara, near Akita-komagadake (mountain), Shizukuishi town, Iwate Pref., Japan, August 6, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum wandae Staurastrum wandae Staurastrum wandae

Images of collecting locality: No.6, a marsh pond at Sensho-ga-hara, near Akita-komagadake (mountain), Shizukuishi town, Iwate Pref., Japan, August 6, 2007 by Y. Tsukii

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