Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Oscillatoria,
cell body μm long, 7-8 μm wide, L/W=, anterior end tapered,
x 640, drainage ditch, Maeda, Furukawa city, Miyagi Pref., Japan, November 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640