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 Nostocales Borzì (1914)] see Order Nostocales corrig. Borzì 1914
                     1 [Family Capsosiraceae L. Geitler (1925), incertae sedis] see Family Capsosiraceae Geitler 1925
                     2 [Family Rhizonemataceae Büdel & Kauff ex Lücking & Barrie (2014), incertae sedis [monotypic]] see Family Rhizonemataceae Büdel and Kauff ex Lücking and Barrie 2014
                     3.1 [Family Rivulariaceae Frank (1886)] see Family Rivulariaceae Frank 1886
                     3.1.0 [Family Microchaetaceae Lemmermann (1907)] see Family Rivulariaceae Frank (1886)
                     3.2.1 [Family Scytonemataceae A.B.Frank (1886)] see Family Scytonemataceae corrig. Frank 1886
                     3.2.1.22 [Family "Symphyonemataceae" Hoffmann, Komárek & Kaštovský (2005), nom. inval.] see Family Scytonemataceae A.B.Frank (1886)
                     3.2.2 [Family Hapalosiphonaceae Elenkin (1917), nom. cons.] see Family Hapalosiphonaceae Elenkin 1917
                     3.2.2.0 [Family Geitleriaceae C. Kilgore & J.R.Johans. (2018) [monotypic]] see Family Hapalosiphonaceae Elenkin 1917
                     3.2.2.0 [Family Loriellaceae Geitler (1925)] see Family Hapalosiphonaceae Elenkin 1917
                     3.2.2.04 [Family Chlorogloeopsidaceae Mitra & Pandey (1967) [monotypic]] see Family Chlorogloeopsidaceae Mitra and Pandey 1967
                     4.1.1 [Family Heteroscytonemataceae McGregor & Sendall (2018) [monotypic]] see Family Heteroscytonemataceae McGregor and Sendall 2018
                     4.1.2 [Family Stigonemataceae Borzì (1892), nom. cons.] see Family Stigonemataceae corrig. (Agardh ex Bornet and Flahault 1886) Borzì 1892 nom. cons.
                     4.2.1 [Family Tolypotrichaceae Hauer, Bohunická, J.R.Johans., Mareš & Berrendero-Gomez (2014)] see Family Tolypotrichaceae corrig. Hauer et al. 2014
                     4.2.1.0 [Family "Tolypothrichaceae" Hauer, Bohunická, J.R.Johans., Mareš & Berrendero-Gomez (2014), orth. inval.] see Family Tolypotrichaceae Hauer, Bohunická, J.R.Johans., Mareš & Berrendero-Gomez (2014)
                     4.2.1.01 [Family Borzinemataceae L. Geitler (1942)] see Family Borzinemataceae Geitler 1942
                     4.2.1.08 [Family Godleyaceae Hauer, Bohunická, J.R.Johans., Mareš & Berrendero-Gomez (2014)] see Family Godleyaceae Hauer et al. 2014
                     4.2.2.1 [Family Leptobasaceae Elenkin (1917), nom. illeg.] see Family Nostocaceae Eichler 1886
                     4.2.2.1.0 [Family "Fortieaceae" Komárek, Kaštovský, Mareš & Johansen (2014), nom. nud.] see Family Leptobasaceae Elenkin (1917), nom. illeg.
                     4.2.2.2.1.1 [Family Nostocaceaeᵀ Eichler (1886)] see Family Nostocaceae Eichler 1886
                     4.2.2.2.1.2 [Family "Aphanizomenonaceae" Elenkin (1938), orth. inval.] see Family Aphanizomenaceae corrig. Elenkin 1938
                     4.2.2.2.1.2.10 [Family Gloeotrichiaceae Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014)] see Family Aphanizomenaceae corrig. Elenkin 1938
                     4.2.2.2.2 [Family Nodulariaceae Elenkin (1916)] see Family Nodulariaceae Elenkin 1916