Cyanophyceae: Nostocales: Oscillatoriaceae


Family: Trichome (filamentous structure) lacks heterocysts; with equal diameter throughout hole 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, x 400, x 640, Uruguay Nov. 1999, photo by Yuuji Tsukii

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