Diatoms of North AmericaDiatoms of North America
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Compare Denticula kuetzingii

Grunow 1862

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Denticula tenuis has a higher stria density, fibulae that extend across the valve face, and an eccentric raphe that is on the valve face.

Nitzschia semirobusta has a smaller size range and lower stria density.

Nitschia amphibia has a central gap in the fibulae.

LM scalebar = 10 µm
Denticula_kuetzingii_LM1 Denticula kuetzingii LM6 Denticula kuetzingii LM4 Denticula kuetzingii LM2 Denticula kuetzingii LM7 Denticula kuetzingii LM5 Denticula kuetzingii LM3
Length Range
20.5-28.3 µm
Width Range
4.5-5.7 µm
Striae in 10 µm
17-19

Denticula tenuis

Kütz. 1844

Denticula Tenuis 002 Denticula Tenuis 002B Denticula Tenuis 005B Denticula Tenuis 001 Denticula Tenuis 003 Denticula Tenuis 005 Denticula Tenuis 004
Length Range
12-20 µm
Width Range
4 µm
Striae in 10 µm
22-28

Nitzschia semirobusta

Lange-Bert. 1993

Nitzschia semirobusta LM4 Nitzschia semirobusta LM3 Nitzschia semirobusta LM2 Nitzschia semirobusta LM1 Nitzschia semirobusta LM5
Length Range
9.5-22 µm
Width Range
4.3-5.2 µm
Striae in 10 µm
14-18

Nitzschia amphibia

Grunow 1862

Nitzschia amphibia LM3 Nitzschia amphibia LM5 Nitzschia amphibia LM2 Nitzschia amphibia LM1 Nitzschia amphibia LM4
Length Range
14-37 µm
Width Range
4.0-4.5 µm
Striae in 10 µm
14-18