Encyonopsis bobmarshallensis has smaller valves, a smaller central area, and somewhat lower stria density. Encyonopsis albertana and E. krammeri have more dorsiventral valves and smaller central areas. Encyonopsis subminuta has more elliptic valves and lacks a central area.
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.