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: (Illustrations of The Japanese Fresh-water Algae, 1977)
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S. johnsonii ?
35-38 x 55-68 μm
Tashirodaira m.
Hakkoda mountain
Aomori, 2005
S. johnsonii
μm
Kareki-numa
Nikko
Tochigi, 2008
S. johnsonii
μm
Kashibaru m.II
Karatsu
Saga, 2008
S. johnsonii
μm
Water reservoir
Iiyama
Nagano, 2008