Nitzschia acicularis
(Kützing) W. Smith
 
Genus: 
 
Species: 
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Nitzschia acicularis, 
cell body needle-like in shape (thin, tapered at both ends), 59-81 μm long, 3 μm wide, 
x 400, Japan, 1997 by Y. Tsukii
 50 μm
 100 μm
 150 μm; x 400
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