Family: Trichome (filamentous structure) lacks heterocysts; with equal diameter throughout whole length;
no hair-like structure; no branching.
Genus:
(Illustrations of The Japanese Fresh-water Algae, 1977).
Spirulina sp.,
cell body μm long, μm wide,
x 640, near Nahoso primary school, Kozutusmi, Kawagoe city, Saitama Pref., Japan, July 18, 2004 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
x 400, x 640
x 400, x 640