Compare Pinnularia gibbiformis
Compare
Pinnularia gibba has broader valves with a wider axial area.
Both P. subcapitata and P. subcapitata var. elongata have fascia and less convergent striae at the apices.
LM scalebar = 10 µm
Length Range
40.7-48 µm
40.7-48 µm
Width Range
5.8-6.8 µm
5.8-6.8 µm
Striae in 10 µm
12
12
Pinnularia subcapitata var. elongata
Length Range
35-56 µm
35-56 µm
Width Range
5.7-6.2 µm
5.7-6.2 µm
Striae in 10 µm
11-13
11-13
Also compare to
Pinnularia gibba
BioData Reference
Krammer 2000 Pl 68 Fig 1-8 Pl 69 Fig 1-5
Pinnularia subcapitata
BioData Reference
Krammer 2000 Pl 88 Fig 49-56