Genus:
Species: Cell body 140-200 (340) μm long, 25-40 (42) μm wide
(Süßwasserflora von Mitteleuropa 2/1, Bacillariophyceae 1, 1997).
Pinnularia sp.,
cell body 145 μm long, 29 μm wide,
x 640, Senjo-ga-hara (marsh), Nikko city, Tochigi Pref., Japan, September 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640