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 sp.
2.5-4.5 x 5 μm
L/W=0.5-0.9
Mizuko
Fujimi
Saitama, 2003
Oscillatoria sp.
2.5-5 x 5 μm
L/W=0.5-1.0
Numappara marsh
Kuroiso
Tochigi, 2003
Oscillatoria sp.
2-4 x 4.5 μm
L/W=0.4-0.9
Koigakubo marsh
Tessei-cho
Okayama, 2004
Oscillatoria sp.
3.5-7 x 5 μm
L/W=
Omotsubo marsh
Tetta-cho
Okayama, 2004
