Family: Unicells or cells loosely attached forming hyphae; cell body varied in shape, a constriction at the center in most species; cell walls consisting of two or more parts, with small pores and various ornaments (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus:
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Similar genus -->> Sphaerozosma;
G. moniliformis
28 x 18 μm
Shimo-no-koike
Shiga highland
Nagano, 2004
