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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum simonyi
var. sparse-aculeatum (Schmidle) Hirano

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 var. sparse-aculeatum (Schmidle) Hirano ?, cell body 21 μm long, 20 μm wide (including short spines, 2 μm), L/W=1.1, isthmus 8 μm wide, x 640, No. 2, Japanese Skunk Cabbage marsh, Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, August 11, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum Staurastrum

Staurastrum simonyi var. sparse-aculeatum (Schmidle) Hirano ?, cell body ?? μm long, 20 μm wide (including short spines, 1.5 μm), L/W=, isthmus 6 μm wide, x 640, No. 3, Japanese Skunk Cabbage marsh, Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, August 11, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum

Images of collecting locality: Japanese Skunk Cabbage marsh, Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, August 11, 2006 by Y. Tsukii

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