Genus:
Species: Cell body 140-200 (340) μm long, 25-40 (42) μm wide
(Süßwasserflora von Mitteleuropa 2/1, Bacillariophyceae 1, 1997).
Pinnularia,
cell body 177 μm long, 30 μm wide,
x 400, x 640, rice field, Morito, Sawara city, Chiba Pref., Japan, October 11, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640