Order & Family: Floating unicells or a colony embedded in a matrix; no differentiation of apical and base structures; only one family.
Genus: (Illustrations of The Japanese Fresh-water Algae, 1977).
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Gloeocapsa sp.
μm
Iruma
Saitama, 2002
Gloeocapsa sp.
or Chroococcus ?
μm
Omine-numa
Tsukiyono
Gunma, 2003