 
 Synedra acus
Synedra acus
Kützing
|  Genus: Species:
 | 
Synedra acus ?, 
cell body 85 μm long, 3.5 μm wide, L/W=, 
x 640, a small pond at Kowashimizu, Suwa city, Nagano Pref., Japan, May 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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