Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Oscillatoria sp.,
cell body 2.5-5.0 μm long, 4.5 μm wide, L/W=1.1,
x 640, Mihashi Park, Saitama city (Omiya), Saitama Pref., Japan, October 2, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640