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
                     [Family Scytonemataceae A.B.Frank (1886)] see Family Scytonemataceae corrig. Frank 1886
                       01 ?[Genus Adrianema De Toni (1936), nom. illeg. [monotypic]] see Genus Lithonema Ercegović 1929
                       02 ?[Genus Brachytrichia G. Zanardini ex Bornet & Flahault (1886)] see Genus Brachytrichia Zanardini ex Bornet and Flahault 1886
                       03 ?[Genus "Chakia" J.Komárková, E.Zapomělová & Komárek (2013), nom. inval.] see Genus Chakia Komárková et al. 2013 nom. inval.
                       04 ?[Genus Colteronema Copel. (1936)] see Genus Colteronema Copeland 1936
                       05 ?[Genus Croatella Ercegović (1925)] see Genus Croatella Ercegović 1925
                       06 ?[Genus Herpyzonema Weber-van Bosse (1913)] see Genus Herpyzonema Weber-van Bosse 1913
                       07 ?[Genus Iyengariella Desikachary (1953)] see Genus Iyengariella Desikachary 1953
                       08 ?[Genus "Loriellopsis" Hernández-Mariné & Canals (2011), nom. inval.] see Genus Loriellopsis Hernández-Mariné and Canals 2011 nom. inval.
                       09 ?[Genus Cyanophiothrix E.A. Molinari-Novoa & M.D. Guiry (2021)] see Genus Cyanophiothrix Molinari and Guiry 2021
                       09.0 ?[Genus Ophiothrix Sant'Anna, Azevedo, Kaštovský & Komárek (2010), nom. illeg.] see Genus Cyanophiothrix E.A. Molinari-Novoa & M.D. Guiry (2021)
                       10 ?[Genus Parenchymorpha C.K. Tseng & M. Hua (1984)] see Genus Parenchymorpha Tseng and Hua 1984
                       11 ?[Genus Scytonematopsis E.I. Kiseleva (1930)] see Genus Scytonematopsis Kiseleva 1930
                       12 ?[Genus Symphyonema C.C. Jao (1944)] see Genus Symphyonema Jao 1944
                       13 ?[Genus Symphyonemopsis G. Tiwari & A. Mitra (1969)] see Genus Symphyonemopsis Tiwari and Mitra 1969
                       14 ?[Genus Voukiella Ercegović (1925)] see Genus Voukiella Ercegović 1925
                       15 [Genus Aetokthonos S.B.Wilde & J.R.Johans. (2014)] see Genus Aetokthonos Wilde and Johansen 2014
                       16 [Genus Brasilonema Fiore, Sant'Anna, Azevedo, Komárek, Kaštovský, Sulek & Lorenzi (2007)] see Genus Brasilonema Fiore et al. 2007
                       17 [Genus Cronbergia Komárek, Zapomělová & Hindák (2010)] see Genus Cronbergia Komárek et al. 2010
                       18 [Genus Ewamiania McGregor & Sendall (2017)] see Genus Ewamiania McGregor and Sendall 2017
                       19 [Genus "Iphinoe" V. Lamprinou & A. Pantazidou (2011), nom. inval.] see Genus Iphinoe Lamprinou and Pantazidou 2011, nom. inval.
                       20 [Genus Iningainema McGregor & Sendall (2017)] see Genus Iningainema McGregor and Sendall 2017
                       21 [Genus Mastigocladopsis M.O.P. Iyengar & Desikachary (1946)] see Genus Mastigocladopsis Iyengar and Desikachary 1946
                       22 [Genus Petalonema Berkeley ex Correns (1889)] see Genus Petalonema Berkeley ex Correns 1889
                       23 [Genus Scytonemaᵀ C.Agardh ex Bornet & Flahault (1886)] see Genus Scytonema Agardh ex Bornet and Flahault 1886
                       24 [Genus Spelaeonaias Lamprinou, Christodoulou, Hernández-Mariné & Economou-Amilli (2016)] see Genus Spelaeonaias Lamprinou et al. 2016