Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
                 Class "Cyanobacteria" Cavalier-Smith, 2002
                   [Family "Family 4.1" nom. inval.]
                     [Genus "Nostoc" Vaucher ex Bornet and Flahault 1886 nom. inval.] see Genus Nostoc Vaucher ex Bornet & Flahault (1888)
                       1 ["Nostoc" Vaucher, 1888, Ex Bornet & Flahaul]
                       2 ["Nostoc commune" [ICNB]] see Nostoc commune Vaucher ex Bornet & Flahault 1888 [ICBN]
                       3 ["Nostoc muscorum" [ICNB]] see Nostoc muscorum C.Agardh [ICBN]
                       4 ["Nostoc punctiforme" [ICNB]] see Nostoc punctiforme (F.T. Kützing) ex Hariot 1891 [ICBN]