Diatoms of North AmericaDiatoms of North America
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Compare Nitzschia columbiana

Sovereign 1958

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Nitzschia columbiana is distinguished from N. exilis by the wider valves and coarse fibulae.

LM scalebar = 10 µm
Columbiana 002 Columbiana 007 Columbiana 005 Columbiana 001 Columbiana 006 Columbiana 003
Length Range
25-70 µm
Width Range
3-5 µm
Striae in 10 µm
Striae not visible to only faintly visible

Nitzschia exilis

Sovereign 1958

Nitzschia exilis LM2 Nitzschia exilis LM4 Nitzschia exilis LM5 Nitzschia exilis LM6
Length Range
24-64 µm
Width Range
2-3 µm
Striae in 10 µm
Not visible in the light microscope