Valves are linear, with bluntly rounded, subcapitate apices. The central area expands to the valve margin on the secondary side and is much smaller on the primary side of the valve.
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.