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 Nostocaceaeᵀ Eichler (1886)] see Family Nostocaceae Eichler 1886
                       [Genus Nostocᵀ Vaucher ex Bornet & Flahault (1886)] see Genus Nostoc Vaucher ex Bornet and Flahault 1886
                         Nostoc calcicola Brébisson ex Bornet and Flahault 1888
                         Nostoc communeᵀ Vaucher ex Bornet & Flahault 1888 [ICBN]
                         Nostoc edaphicum Kondrateva 1962
                         Nostoc linckia (Roth) Bornet and Thur.
                         Nostoc muscorum C.Agardh [ICBN]
                         Nostoc planctonicum Poretzky and Tschernow 1929
                         Nostoc punctiforme (Kütz.) ex Hariot (1891)
                         Nostoc sphaericum J.P.É. Vaucher ex Bornet and Flahault 1886-1888[1888]