Compare Pinnularia transversa
Pinnularia transversa is similar to P. nobilis var. regularis, P. domingensis and P. gentilis as all these species have linear valves with rounded ends. These species, however, are relatively wide compared to their length.
Pinnularia kwacksii has a broader axial area.
LM scalebar = 10 µm
Length Range
168.6-224.5 µm
168.6-224.5 µm
Width Range
16-19 µm
16-19 µm
Striae in 10 µm
8-10
8-10
Length Range
200-270 µm
200-270 µm
Width Range
32.5-39 µm
32.5-39 µm
Striae in 10 µm
5
5
Length Range
93-154 µm
93-154 µm
Width Range
11-14 µm
11-14 µm
Striae in 10 µm
12-13
12-13
Also compare to
Pinnularia gentilis
BioData Reference
Krammer 2000 Pl 181 Fig 1 2 Pl 197 Fig 1-7