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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. curviceps ?), cell body μm long, 11 μm wide, L/W=, x 640, drainage ditch exit, Ta-gawa (Ta river), Kawanago, Kaminokawa town, Tochigi Pref., Japan, May 4, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria Oscillatoria Oscillatoria
Oscillatoria Oscillatoria
Oscillatoria Oscillatoria Oscillatoria Oscillatoria Oscillatoria


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