Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Oscillatoria sp.6
4 μm φ
Saitama, 2001
Oscillatoria sp.6
3.8 μm φ
Japan, 199?
Oscillatoria sp.6*
4 μm φ
Shizuoka, 2001