cyanobacterial phylogeny

A curated 16S rRNA cyanobacterial phylogeny with almost 4000 members. The cyanobacterial taxonomy is correlated with trees of more than 950 total and 230 complete genomes. Errors in cyanobacterial nomenclature are exposed and problematic genera and type species are discussed.

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Many pages are formatted as PDF; all pages may be searched, printed or downloaded. All phylogenetic trees, except the orders tree, have multiple, overlapping, pages. Other links are directly available on the main text page. The contents of the site are updated regularly with new or revised genera or species, and new genomic sequences are added when available. All data are available for download.

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This ad-free site was created by Mike Herdman and Rosi Rippka,
January 1 2017

NEW: release 14.1 replaced the previous version (September 2022);
see the changelog for details.

Cyanobacterial phylogeny. Some genera added for this release: Apatinema, Johanseniella, Neocylindrospermum, Siamcapillus.

contact Questions or comments: write to mherdman1245(at)