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Cyanophyceae: Chroococcales: Chroococcaceae
Cyanophyceae: Chroococcales: Synechococcaceae

 Aphanothece sp.

Aphanothece Order & Family: Floating unicells or a colony embedded in a matrix; no differentiation of apical and base structures; only one family.
Genus: A colony of elliptical cells; each cell without a sheath or with a thin sheath, both ends of the cells spherical, not curved (Illustrations of The Japanese Fresh-water Algae, 1977).

Aphanothece ?, cell body 8 μm long, 6 μm wide, L/W=1.3, x 640, Ukishima marsh (or bog), Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, July 3, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Aphanothece

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