Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Oscillatoria spirulinoides Yoneda ?,
cell body 2.2 μm long, 3.5 μm wide, L/W=0.6,
x 640, near Todoroki green land, Kawasaki city, Kanawaga Pref., Japan, May 26, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640