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Cyanophyceae: Chroococcales: Chroococcaceae

 Chroococcus sp.

Chroococcus Order & Family: Floating unicells or a colony embedded in a matrix; no differentiation of apical and base structures; only one family.
Genus: Unicells or a colony of spherical cells covered with a distinct sheath (Illustrations of The Japanese Fresh-water Algae, 1977).

Chroococcus sp., body 7 μm long, 4 μm wide, x 640, Inari Park, Toyama city, Toyama Pref., Japan, September 2002, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Chroococcus Chroococcus

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