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
                   [Family Loefgreniaceae] see Family Loriellaceae Geitler (1925)
                   [Family Sirosiphoniaceae]
                   1 Family †Aphralysiaceae Vachard (2001), incertae sedis
                   2 [Order "Gloeobacterales" Caval.-Sm. (2002), nom. inval.] see Order Gloeobacterales Cavalier-Smith 2002 nom. inval., nom. rej.
                   3.1.1 [Order Aegeococcales Strunecký & Mareš (2023) [monotypic]] see Order Aegeococcales Strunecký and Mareš 2023
                   3.1.1.0 [Order "Aegeococcocales" Strunecký & Mareš (2023), orth. inval. [monotypic]] see Order Aegeococcales Strunecký & Mareš (2023)
                   3.1.2 [Order Thermostichales Komárek & Strunecký (2020) [monotypic]] see Order Thermostichales Komárek and Strunecký 2020
                   3.2.1 [Order "Pseudanabaenales" L. Hoffm., Komárek & Kaštovský (2005), nom. inval.] see Order Pseudanabaenales Hoffmann et al. 2005 nom. nud.
                   3.2.2.1 [Order Gloeomargaritales Moreira, Tavera, Benzerara, Skouri-Panet, Couradeau, Gérard, Fonta, Novelo, Zivanovic & López-García (2017) [monotypic]] see Order Gloeomargaritales Moreira et al. 2017
                   3.2.2.2.1 [Order "Acaryochloridales" Strunecký & Mareš (2023), nom. inval.] see Order Acaryochloridales Strunecký and Mareš 2023 nom. inval.
                   3.2.2.2.2.1.1.1 [Order Prochlorotrichales Strunecký & Mareš (2023) [monotypic]] see Order Prochlorotrichales Strunecký and Mareš 2023
                   3.2.2.2.2.1.1.1.0 [Order "Prochlorothrichales" Strunecký & Mareš (2023), orth. inval. [monotypic]] see Order Prochlorotrichales Strunecký & Mareš (2023)
                   3.2.2.2.2.1.1.2 [Order "Synechococcales" Hoffmann, Komárek & Kaštovský (2005), nom. inval.] see Order Synechococcales Hoffmann et al. 2005 nom. nud.
                   3.2.2.2.2.1.2 [Order Nodosilineales Strunecký & Mareš (2023)] see Order Nodosilineales Strunecký and Mareš 2023
                   3.2.2.2.2.2.1 [Order Leptolyngbyales Strunecký & Mareš (2023) [paraphyletic]] see Order Leptolyngbyales Strunecký and Mareš 2023
                   3.2.2.2.2.2.1.2.2.2 [Order Oculatellales Strunecký & Mareš (2023) [monotypic]] see Order Oculatellales Strunecký and Mareš 2023
                   3.2.2.2.2.2.1.2.3.1 [Order Geitlerinematales Strunecký & Mareš (2023) [monotypic]] see Order Geitlerinematales Strunecký and Mareš 2023
                   3.2.2.2.2.2.1.2.3.2.1 [Order Desertifilales Strunecký & Mareš (2023), sedis mutabilis [monotypic]] see Order Desertifilales Strunecký and Mareš 2023
                   3.2.2.2.2.2.1.2.3.2.2 [Order Oscillatoriales Schaffner (1922), sedis mutabilis] see Order Oscillatoriales Schaffner 1922
                   3.2.2.2.2.2.1.2.3.2.3.1.1 [Order Coleofasciculales Strunecký & Mareš (2023)] see Order Coleofasciculales Strunecký and Mareš 2023
                   3.2.2.2.2.2.1.2.3.2.3.1.2.1 [Order Spirulinales Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014)] see Order Spirulinales Komárek et al. 2014
                   3.2.2.2.2.2.1.2.3.2.3.1.2.2 [Order Chroococcales Ardissone (1887)] see Order Chroococcales corrig. Ardissone 1887
                   3.2.2.2.2.2.1.2.3.2.3.2 [Order Gomontiellales Strunecký & Mareš (2023), sedis mutabilis] see Order Gomontiellales Strunecký and Mareš 2023
                   3.2.2.2.2.2.1.2.3.2.3.3.1 [Order Aerosakkonematales F.W. Lefler, D.E. Berthold, J.A. Moretto & Laugh. (2024) [monotypic]] see Order Oscillatoriales Schaffner 1922
                   3.2.2.2.2.2.1.2.3.2.3.3.2.1 [Order Chroococcidiopsidales Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014) [monotypic]] see Order Chroococcidiopsidales Komárek et al. 2014
                   3.2.2.2.2.2.1.2.3.2.3.3.2.2 [Order Nostocales Borzì (1914)] see Order Nostocales corrig. Borzì 1914
                   3.2.2.2.2.2.1.2.3.2.3.3.2.2.0 [Order Hormogonales Atkinson 1905] see Order Nostocales Borzì (1914)