Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               [Phylum Cyanobacteria Garcia-Pichel et al. (2020)] see Phylum Cyanobacteriota Oren et al. 2022
                 [Class Cyanophyceae Hauck (1885)] see Class Chroococcophyceae Hollerbach et al. 1953
                   [Order Chroococcales Ardissone (1887)] see Order Chroococcales corrig. Ardissone 1887
                     [Family Chroococcaceaeᵀ Nägeli (1849)] see Family Chroococcaceae Nägeli 1849
                       [Genus Coccochloris Sprengel (1807)]
                       [Genus Haematococcus C.Agardh 1828[1830] nom. rej.]
                       01 ?[Genus Cyanoarbor Wang (1989)] see Genus Cyanoarbor Wang 1989
                       03 ?[Genus Cyanodermatium L. Geitler (1933)] see Genus Cyanodermatium Geitler 1933
                       04 ?[Genus Cyanokybus J. Schiller (1956)] see Genus Cyanokybus Schiller 1956
                       05 ?[Genus Cyanosarcina Kováčik (1988)] see Genus Cyanosarcina Kováčik 1988
                       06 ?[Genus Entophysalis Kütz. (1843)] see Genus Entophysalis Kützing 1843
                       07 ?[Genus Inacoccus Gama, Rigonato, Fiore & Sant'Anna (2019)] see Genus Inacoccus corrig. Gama et al. 2019
                       08 ?[Genus Johanseninema P. Hašler, P. Dvořák & A. Poulíčková (2014)] see Genus Johanseninema Hašler et al. 2014
                       09 ?[Genus Lithocapsa A. Ercegović (1925)] see Genus Lithocapsa Ercegović 1925
                       10 ?[Genus Nephrococcus Y.Y. Li (1984)] see Genus Nephrococcus Li 1984
                       11 ?[Genus Paracapsa E. Naumann (1924)] see Genus Paracapsa Naumann 1924
                       12 ?[Genus Placoma P.K.A. Schousboe ex Bornet & G. Thuret (1876), nom. illeg.] see Genus Cyanoplacoma E.A. Molinari-Novoa & M.D. Guiry (2021)
                       13 ?[Genus Pseudocapsa A. Ercegović (1925)] see Genus Pseudocapsa Ercegović 1925
                       14 ?[Genus Siphononema L. Geitler (1925)] see Genus Siphononema Geitler 1925
                       15 [Genus Chroococcusᵀ C. Nägeli (1849)] see Genus Chroococcus Nägeli 1849
                       16 [Genus Cryptococcum Gama, Rigonato, Fiore & Sant'Anna (2019)] see Genus Cryptococcum Gama et al. 2019
                       x [Genus "Gloebacter" orth. inval.] see Genus Gloeobacter Rippka, Waterbury & Cohen-Baz. (1974), nom. inval.