Genus: Cells arranged three-dimentionally; cell body spherical or triangular pyramid in shape
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Colonies of 8 or 4 cells connected with each other by gelatinous filaments, daughter colonies form
a complex colony of 64 or 16 cells; cell body triangular pyramid in shape, 8-12 μm in diam.;
(Illustrations of The Japanese Fresh-water Algae, 1977).
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