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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria sp.

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

Oscillatoria (or Phormidium ?), cell body 3-7 μm long, 5 μm wide, L/W=0.6-1.4, x 640, Shimizu-daira, Nasu town, Tochigi Pref., Japan, September 10, 2005, collected by Eizaburo Tsukii, photo by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria Oscillatoria Oscillatoria Oscillatoria

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