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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
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Glossary
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What are diatoms?
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Diploneis_distal_raphe.jpg
Glossary Term
Distal raphe
Caption
External view of a valve of
Diploneis
(SEM). The two arrows show the distal raphe ends, which are unilaterally (to the same side) deflected.
Credit
Ditmar Metzeltin
