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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria sp.

Oscillatoria Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Oscillatoria sp. (or Microcoleus ?), cell body 2-4 μm long, 1 μm wide, L/W=2-4, x 640, Ikenokochi (or Ikenokouchi) marsh, Tsuruga city, Fukui Pref., Japan, September 11, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria

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