 
 Nitzschia sigmoidea
Nitzschia sigmoidea
(Nitzsch) W. Smith 1853
|  Genus: Species:
 | 
Nitzschia sigmoidea (Nitzsch) W. Smith, 
cell body 300 μm long, 30 μm wide, L/W=10.0, 
x 400, x 640, Kiyasse-Hanyu (Mitagaya Agriculture Park), Mitagaya, Hanyu city, Saitama Pref., Japan, March 4,  2006 by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
Images of collecting locality: 
Kiyasse-Hanyu (Mitagaya Agriculture Park), Mitagaya, Hanyu city, Saitama Pref., Japan, March 4,  2006 by Y. Tsukii
 
 
 
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