Cymbopleura amphicephala has more elliptic valves, with capitate apices that are deflected ventrally. Cymbopleura similiformis has more linear valves, with distinct shoulders and capitate apices.
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.