Valves are small, with rounded ends. Striae are not visible in LM. Costae are parallel, becoming curved at the 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.
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For the Gift Designation, type "diatom" in the search box and select "Diatom Lab Research Fund". This is the designated fund for diatoms.org.