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 without spines 28-44 μm long,
62-73 μm wide (with spines),
constriction 85-15 μm wide,
(Illustrations of The Japanese Fresh-water Algae, 1977)