Bacillariophyceae
: Pennales:
Araphidineae
: Diatomaceae
Synedra
acus
Kützing
Genus:
Species:
Synedra acus
sp. ?, cell body
109
μm long,
μm wide, x 400, Japan, 1998 by Y. Tsukii
50 μm
100 μm
150 μm; x 400
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