Nitzschia sigmoidea
(Nitzsch) W. Smith 1853
Genus:
Species:
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Nitzschia sigmoidea (or N. obtusa),
cell body μm long, μm wide,
x 640, Daidarabotchi-ike (or Daizahoshi-ike), Iizuna-kogen (Iizuna Highland), Nagano city, Nagano Pref., Japan, September 2003, by Y. Tsukii
31 μm
63 μm
94 μm; x 640
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