|  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:
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