 
 Navicula pupula
Navicula pupula
Kützing
|  Genus: Species:
 | 
Navicula pupula Kützing (or Pinnularia braunii (Grunow) Cleve ?), 
cell body  μm long,  μm wide, 
x 640, river bank of Arakawa, near Doman-green Park, Nishi-Urawa, Saitama Pref., Japan, November 2003 by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
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