Nitzschia sigmoidea
(Nitzsch) W. Smith 1853
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Species:
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Nitzschia sigmoidea (Nitzsch) W. Smith,
cell body 260 μm long, 17 μm wide, L/W=15.3,
x 400, x 640, rice field, near Ichinoseki Railroad Station, Ichinoseki city, Iwate Pref., Japan, July 24, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
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