[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     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]