Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Oscillatoria,
cell body 3 μm long, 9 μm wide, L/W=0.3,
x 640, near Yanase river, Mizuko, Fujimi city, Saitama Pref., Japan, December 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640