Unlike other species of Frustulia, F. creuzburgensis lacks internal longitudinal ribs. The external proximal raphe ends are unilaterally deflected, while the distal raphe ends are straight. The distal raphe ends terminate in a transverse depression that contains poroids. The helictoglossae are prominent in LM.
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.