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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria princeps
Vaucher var. princeps

Oscillatoria princeps Family: Trichome (filamentous structure) lacks heterocysts; with equal diameter throughout whole length; no hair-like structure; no branching.
Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cells 16-60 μm (usually 40-50 μm) in diam., 3.5-7 μm long (Photomicrographs of the Freshwater Algae, vol. 4, 1985).

Oscillatoria princeps Vaucher var. princeps, cell body 4.5-9 μm long, 47 μm wide, L/W=, x 400, x 640, rice field, Higashi-sano (near Minami-kamishiro railway station), Hakuba village, Nagano Pref., Japan, October 3, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria Oscillatoria Oscillatoria Oscillatoria Oscillatoria Oscillatoria

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