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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria subtilissima
Kützing

Oscillatoria subtilissima Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Trichome solitary or in small group, 1-1.5 μm wide; cell body 1-2 times longer than the width; (Illustrations of The Japanese Fresh-water Algae, 1977).

Oscillatoria subtilissima Kützing, cell body 2.5-5.0 μm long, 2 μm wide, L/W=1.3-2.5, x 640, Shiba river, near Owada Park, Saitama city, Saitama Pref., Japan, April 3, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria

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