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 Cyanobacteriota Oren et al. 2022
                 Class Chroococcophyceaeᵀ Hollerbach et al. 1953
                   Order Nostocales corrig. Borzì 1914
                     Family Tolypotrichaceae corrig. Hauer et al. 2014
                       1 Genus Azorothrix Luz et al. 2024
                       2 Genus Coleodesmium Borzì ex Geitler 1942
                       3 Genus Dactylothamnos Komárek et al. 2015
                       4 Genus Kryptousia Alvarenga et al. 2017
                       5 Genus Rexia Casamatta et al. 2006
                       6 Genus Seguenzaea Borzì 1907
                       7 Genus Spirirestis Flechtner and Johansen 2002
                       8 Genus Streptostemon Sant'Anna et al. 2010
                       9 Genus Tolypothrixᵀ Kützing ex Bornet and Flahault 1886