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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum johnsonii
W. & G. S. West

Staurastrum johnsonii 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: with arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Species:

Staurastrum johnsonii W. et G.S. West, cell body 37 μm long, 68 μm wide (including arm-like projections), L/W=0.5, isthmus 11 μm wide, x 640, Tashirodaira marsh, Hakkoda mountain, Aomori city, Aomori Pref., Japan, July 17, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum johnsonii Staurastrum johnsonii
Cell body 35 μm long, 60 μm wide (including arm-like projections), L/W=0.6, isthmus 7 μm wide, x 640
Staurastrum johnsonii Staurastrum johnsonii
Cell body 38 μm long, 55 μm wide (including arm-like projections), L/W=, isthmus 10 μm wide, x 640
Staurastrum johnsonii

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