Genus:
Species: Cell body 140-200(340) μm long, 25-40(42) μm wide
(Süßwasserflora von Mitteleuropa 2/1, Bacillariophyceae 1, 1997).
Pinnularia maior (Kützing) Rabenhorst ?,
cell body 300 μm long, 55 μm wide,
x 640, wetland near Ichinose-enchi (along super forest road), Norikura highland, Azumi village, Nagano Pref., Japan, May 28, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640