Cyanophyceae: Nostocales: Oscillatoriaceae
Family: Trichome (filamentous structure) lacks heterocysts; with equal diameter throughout whole length; no hair-like structure; no branching.
Genus: (Illustrations of The Japanese Fresh-water Algae, 1977).
μm wide, spirals
μm wide, x 400, x 640, near Ukima Park, Kita-ku, Tokyo, Japan, July 2001 by Y. Tsukii
150 μm; x 400 :
94 μm; x 640
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