Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Oscillatoria sp.,
cell body 9-13 μm long, 5 μm wide, L/W=1.8-2.6,
x 640, Imou bog, Toyohashi city, Aichi Pref., Japan, September 11, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640