Diatoms of North AmericaDiatoms of North America
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Compare Pinnularia birnirkiana

Patrick and Freese 1961

Compare

Pinnularia wisconsinensis has longer valves, narrower ends, and a narrower central area.

 Pinnularia bottnica has finer striae.

LM scalebar = 10 µm
Pinnularia birnirkiana LM3 Pinnularia birnirkiana LM5 Pinnularia birnirkiana LM2 Pinnularia birnirkiana LM4 Pinnularia birnirkiana LM6 Pinnularia birnirkiana LM1 Pinnularia birnirkiana LM7
Length Range
28.1-54.3 µm
Width Range
9.3-11.1 µm
Striae in 10 µm
10-12

Pinnularia wisconsinensis

Camburn and Charles 2000

Pinularia wisconsinensis LM3 Pinularia wisconsinensis LM4 Pinularia wisconsinensis LM5 Pinularia wisconsinensis LM2 Pinularia wisconsinensis LM6 Pinularia wisconsinensis LM7 Pinularia wisconsinensis LM1
Length Range
55.4-73.7 µm
Width Range
10.9-12.9 µm
Striae in 10 µm
10-12

Also compare to

Pinnularia bottnica

Krammer