Compare

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

Diatoms of North America is running a fundraising campaign to keep the servers in operation. We need you to reach our $25,000 fundraising goal.

If you use and appreciate DONA, make your DONAtion today.

For the Gift Designation, type "diatom" in the search box and select "Diatom Lab Research Fund". This is the designated fund for diatoms.org.