Genus:
Species: Cell body 50-140 μm long, 7-13 μm wide
(Süßwasserflora von Mitteleuropa 2/1, Bacillariophyceae 1, 1997).
Pinnularia gibba,
cell body 101 μm long, 15 μm wide,
x 640, Omoi river, Oyama city, Tochigi Pref., Japan, February 8, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640