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Algal Classification

The system of classification on this site follows AlgaeBase.

The phyla and classes in the table are linked to the relevant pages in Algaebase which will then link to the lower taxonomic groups (order, family, genus). The links to the vernacular group names are to the sections in this website where members of the various phyla are described.

Group common name AlgaeBase classification
Cryptomonads Phylum Cryptophyta, class Cryptophyceae
Stoneworts Phylum Charophyta, class Charophyceae
Desmids Phylum Charophyta, class Zygnematophyceae
Green algae, green seaweeds Phylum Chlorophyta
Cyanobacteria Phylum Cyanobacteria, class Cyanophyceae
Euglenoids Phylum Euglenozoa
Glaucophytes Phylum Glaucophyta
Haptophytes Phylum Haptophyta
Dinoflagellates Phylum Miozoa, class Dinophyceae
Diatoms Phylum Ochrophyta, class Bacillariophyceae
Golden or golden-brown algae
Phylum Ochrophyta, class Chrysophyceae and Synurophyceae
Eustigmatophytes Phylum Ochrophyta, class Eustigmatophyceae
Brown algae Phylum Ochrophyta, class Phaeophyceae
Raphidophytes Phylum Ochrophyta, class Raphidophyceae
Yellow-green algae Phylum Ochrophyta, class Xanthophyceae
Red algae, red seaweeds Phylum Rhodophyta