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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum echinatum
Brébisson

Staurastrum echinatum Subgenus: lacks arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Section [Raphidiastrum]:
Species: Cell body 23.7 μm long, 23.7 μm wide, isthums 10.8 μm wide, 8 short spines at each side of trianglur semicell in top view (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum echinatum Brébisson ?, cell body ?? μm long, 29 μm wide (including spines up to 2.5 μm), L/W=, isthmus 6 μm wide, x 640, No. 2, Iroha-numa (marsh/bog), Zao mountain, Yamagata city, Yamagata Pref., Japan, August 2, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum

Images of collecting locality: No. 2, Iroha-numa (marsh/bog), Zao mountain, Yamagata city, Yamagata Pref., Japan, August 2, 2006 by Y. Tsukii

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