Cavinula davisiae valves are more lanceolate, with coarsely punctate striae. Cavinula cocconeiformis valves are more lanceolate and the central area is smaller and an apically expanded oval shape. Genkalia digitulus is superficially similar, but valves are much smaller.
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.