 
 Navicula sp.
Navicula sp.
Bory 1822
|  Genus: Species:
 | 
Navicula sp., 
cell body 36 μm long, 11 μm wide, 
x 640, drainage ditch under a bridge near Oppe river, Choraku, Kawajima (Kawashima) town, Saitama Pref., March 21, 2005 by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
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