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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum simonyi
Heimerl var. simonyi

Staurastrum simonyi Species [ var. simonyi ]: Cell body 19-24 μm long, 18-25 μm (excluding spines), isthmus 6-7.5 μm wide, 6 short spines at each side of trianglur semicell in top view
[ var. sparse-aculeatum (Schmidle) Hirano ]: Cell body 19.6-23.7 μm long (excluding spines), 19.6-19.8 μm wide (excluding spines), isthmus 5.6-7.7 μm wide, spines equal in length (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum simonyi Heimerl var. simonyi ?, cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, No.1, a small marsh pond at North East of Hachimantai mountain top, Hachimantai city, Iwate Pref., Japan, August 23, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum simonyi Staurastrum simonyi Staurastrum simonyi

Images of collecting locality: No.1, a small marsh pond at North East of Hachimantai mountain top, Hachimantai city, Iwate Pref., Japan, August 23, 2007 by Y. Tsukii

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