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Cyanophyceae: Nostocales: Oscillatoriaceae

Oscillatoria acutissima
Kufferath

Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Trichome without constriction; cell body elongated, 3-7 μm long, 1.5-2 μm wide; (Illustrations of The Japanese Fresh-water Algae, 1977).
Oscillatoria
O. acutissima ?
3-6.5 x 1.2 μm
L/W=2.5-5.4
Furu-tone river
Kasukabe
Saitama, 2004
Oscillatoria
O. acutissima ?
3-5 x 2 μm
L/W=
Senuki
Nasu
Tochigi, 2004
Similar species -->> O. splendida;

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Oscillatoria
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