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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria sp.

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).

Oscillatoria, 4 μm in diam., L/W=, one end rouned and another one tapered, x 400, x 640, Mishima, Shizuoka Pref., Japan, April 2001 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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