Diatoms of North AmericaDiatoms of North America
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Compare Pinnularia kwacksii

Camburn and Charles 2000

Compare

Pinnularia transvera, P neomajor, and P. ruttneri are all larger species, with a lower stria density.

Pinnularia guadalupensis is smaller and has a more narrow axial area.

LM scalebar = 10 µm
Pinnularia kwacksii LM6 Pinnularia kwacksii LM2 Pinnularia kwacksii LM4 Pinnularia kwacksii LM3 Pinnularia kwacksii LM1 Pinnularia kwacksii LM5 Pinnularia kwacksii LM7
Length Range
93-154 µm
Width Range
11-14 µm
Striae in 10 µm
12-13

Pinnularia transversa

(A. Schmidt) Mayer 1940

Pinnularis transversa LM7 Pinnularis transversa LM2 Pinnularis transversa LM6 Pinnularis transversa LM1 Pinnularis transversa LM4 Pinnularis transversa LM3 Pinnularis transversa LM5
Length Range
168.6-224.5 µm
Width Range
16-19 µm
Striae in 10 µm
8-10

Also compare to

Pinnularia ruttneri

BioData Reference
Krammer 2000 Pl 183 Fig 4

Pinnularia neomajor

Krammer 1992

Pinnularia guadalupensis

Manguin in Bourrelly and Manguin 1952