Genus:
Species: Cell body 50-170 μm long, 10-30 μm wide
(Süßwasserflora von Mitteleuropa 2/1, Bacillariophyceae 1, 1997).
Pinnularia sp.,
cell body 109 μm long, 24 μm wide,
x 640, drainage ditch, Kami-karako (kami-garako), Higashi-matsuyama city, Saitama Pref., Japan, October 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640