Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Frustulia inculta

Siver, Pelczar and Hamilton 2009

Frustulia Inculta Guide
Credit: Carrie Graeff
  1. Striae do not circumradiate apices
  2. Longitudinal ribs and raphe curved
  3. Longitudinal ribs moderately or slightly constricted at central nodule
  4. Longitudinal striae wavy
  5. Transapical striae parallel

The striae are not circumradiate at the valve apices. The longitudinal ribs and raphe are noticeably curved. The longitudinal ribs are moderately or slightly constricted at the central nodule. Longitudinal striae are present but are very wavy. The transapical striae are generally parallel.

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.

Donate today