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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria planctonica
Woloszynska

Oscillatoria planctonica Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Trichome straight or slightly curved, without constriction at cell-cell junction, 2-3 μm wide; cell-body length nearly the same as its width (Illustrations of The Japanese Fresh-water Algae, 1977).

Oscillatoria planctonica Woloszynska, cell body 3-5 μm long, 2 μm wide, L/W=, x 640, Senjo-ga-hara (marsh), Nikko city, Tochigi Pref., Japan, September 2003 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria Oscillatoria

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