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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria hamelii
Frémy

Species: Trichome slightly wavy, not attenuated toward ends, 7-8 μm long, 4.8-5 μm wide, L/W=1.5; septum slightly constricted, granules absent along septum; terminal cells rounded (Illustrations of The Japanese Fresh-water Algae, 1977).

Oscillatoria hamelii Frémy, cell body 3.5-7.0 μm long, 5 μm wide, L/W=0.7-1.4, x 640, near Kejo-numa, Furukawa city, Miyagi Pref., Japan, November 2003 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria

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