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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria simplicissima
Gomont

Species: Trichome straight, without constriction at cell-cell junction, 8-9 μm wide; cell body short, 2-4 μm long, L/W=1/4-1/2; granules absent along septum; terminal cells semicircular (Illustrations of the Japanese Fresh-water Algae, 1977).

Oscillatoria simplicissima Gomont ?, cell body 2.5-5 μm long, 10 μm wide, L/W=0.3-0.5, x 640, Watarase river, Ashikaga city, Tochigi Pref., Japan, February 1, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria Oscillatoria

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