Order & Family: Floating unicells or a colony embedded in a matrix; no differentiation of apical and base structures; only one family.
Genus: A spherical colony in which radial filamentous structure present (Illustrations of The Japanese Fresh-water Algae, 1977).
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Similar genus -> Coelosphaerium; Dictyosphaerium;
G. salina ?
μm
Hana-no-oka
Inzai
Chiba, 2006
