Genus:
Species: Cell body 50-170 μm long, 10-30 μm wide
(Süßwasserflora von Mitteleuropa 2/1, Bacillariophyceae 1, 1997).
Pinnularia viridis or Pinnularia gibba var. mesogongyla (Ehrenberg) Hustedt ?,
cell body 78 μm long, 15 μm wide,
x 640, a small pond near Shin-Akitsu railway station, Higashi-Murayama city, Tokyo, Japan, February 11, 2004 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640