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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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What are diatoms?
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FRpolygonata_USGSbiodata.png
Species
Fragilariforma polygonata
Caption
The distribution of
F. polygonata
in rivers of the United States. Accessed on 17 July, 2017.
Credit
USGS/Biodata
