Compare Pinnularia torta
Pinnularia nobilis var. regularis has larger valves, coarser striae, and a less asymmetric axial area.
LM scalebar = 10 µm
Length Range
160.3-256 µm
160.3-256 µm
Width Range
24-31 µm
24-31 µm
Striae in 10 µm
7-8
7-8
Length Range
200-270 µm
200-270 µm
Width Range
32.5-39 µm
32.5-39 µm
Striae in 10 µm
5
5
