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.
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.