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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
Species
Glossary
About
News
Projects
Mission
Board of Directors
Editorial Review Board
Taxon Contributors
Contact Us
What are diatoms?
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Lacinia_2_with_arrow.jpg
Caption
The arrow marks the lacinia covering the distal end of the raphe on this
Neidium
valve (SEM).
Credit
Lane Allen
