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: cell body excluding spines 50-96 μm long, 36-68 μm wide, constriction 24-33 μm wide, (Illustrations of The Japanese Fresh-water Algae, 1977)
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S arctiscon μm Lake Biwa Maibara Shiga, 2008  |
