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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum simonyi
Heimerl var. simonyi

Staurastrum pileatum 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)
Similar species -->> S. echinatum;


Staurastrum simonyi Heimmeril var. simonyi, cell body 22 μm long, 25 μm wide, L/W=0.9, isthmus 8 μm wide, x 640, a small pond at Kowashimizu, Suwa city, Nagano Pref., Japan, July 16, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum simonyi Staurastrum simonyi Staurastrum simonyi Staurastrum simonyi

Staurastrum simonyi similar to S. polymorphum (Subgenus Eustaurastrum), cell body 21 μm long, 31 μm wide, L/W=0.7, isthmus 8 μm wide, x 640, a small pond at Kowashimizu, Suwa city, Nagano Pref., Japan, July 16, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum simonyi Staurastrum simonyi Staurastrum simonyi Staurastrum simonyi Staurastrum simonyi Staurastrum simonyi Staurastrum simonyi


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