Thalassiosira auxospore

Chain of Thalassiosira, with an auxospore

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Taxon Contributors

Contributors produce comprehensive documentation on diatoms, leading to consistent and correct taxonomy.

Neidium Hitchcockii Sem Me 10011 042618 Mix 020Small

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What are Diatoms?

Diatoms

Diatoms are single-celled algae that live nearly everywhere there is water - streams, ponds, lakes, oceans, and even soils.


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Taxon
Identification Guide

Genera

Genera

Classification information, citations, links and species listings for 191 genera completed to date.

Species

Species

Identification guides, original descriptions, citations, autecological information and more for 1099 species and growing.

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This project depends on many people to document the diverse diatom flora of streams, rivers, wetlands, lakes, springs, soils, estuaries and coastal zones.

Recent News & Projects

Diatom Web Academy 2024

Continuing in spring of 2024... Would you like to be part of Diatom Web Academy? We welcome participation by diatomists at every level. Being a host...

Asterionella Fomosa

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Diatoms of North America has been developed in part with the generous funding and support of US EPA, USGS, the Institute of Arctic and Alpine Research at University of Colorado Boulder and other organizations.

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