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Cyanophyceae: Nostocales: Oscillatoriaceae

Oscillatoria irrigua
Kützing

Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Trichome dark-blue in color, nearly straight, without constriction at cell-cell junction, 6-11 μm wide; cell body reddish blue in color, 4-11 μm long (1/4-1/2 of its width); granules present along septum; cell wall of the terminal cells thick (Illustrations of The Japanese Fresh-water Algae, 1977).


Oscillatoria irrigua Kützing (or O. simplicissima ?), cell body μm long, 8.5 μm wide, L/W=, x 640, Motono village, Chiba Pref., Japan, October 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria Oscillatoria


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