 
 
Cyanophyceae: Nostocales: Oscillatoriaceae
Oscillatoria sp.
|  Family: Trichome (filamentous structure)  lacks heterocysts; with equal diameter throughout whole length; 
no hair-like structure; no branching. Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells   
(Illustrations of The Japanese Fresh-water Algae, 1977).
 | 
Oscillatoria ?, 
cell body 2.5 μm long, 11 μm wide, L/W=0.2, 
x 640, Hakkoda Gourd line, Hakkoda mountain, Aomori city, Aomori Pref., Japan, July 17, 2005 by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
Oscillatoria ?, 
cell body  μm long, 10.5 μm wide, L/W=, 
x 640, Hakkoda Gourd line, Hakkoda mountain, Aomori city, Aomori Pref., Japan, July 17, 2005 by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
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