Genus:
Species: Cell body 50-140 μm long, 7-13 μm wide
(Süßwasserflora von Mitteleuropa 2/1, Bacillariophyceae 1, 1997).
Pinnularia gibba Ehrenberg f.subundulata A. Mayer ex Hustedt,
cell body 180 μm long, 24 μm wide,
x 640, Senjo-ga-hara (marsh), Nikko city, Tochigi Pref., Japan, September 2003 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640