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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
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Encyonema_distal.jpg
Glossary Term
Distal raphe
Caption
Valve apex of a species in the genus
Encyonema
(LM). The arrow indicates the distal raphe, which is ventrally deflected.
Credit
Sarah Spaulding
