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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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L-3-44-5_girdle_internal.jpg
Species
Fragilariforma nitzschioides
Caption
Internal valves of
Fragilariforma nitzschioides
, Cayler Prairie swale, Dickinson Co., Iowa
Credit
Kerry Howard
