 
 Nitzschia angustata
Nitzschia angustata
(W. Smith) Grunow
|  Genus: Species:
 | 
Nitzschia angustata (W. Smith) Grunow ?, 
cell body 52 μm long, 9 μm wide, 
x 640, Iruma river, Sayama city, Saitama Pref., Japan, January 25, 2004 by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
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