Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [[crown] organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           [Superkingdom Prokaryotae] see Superkingdom Prokarya
             [Kingdom Monera Haeckel 1866] see Domain Bacteria Woese et al. 1990
               [Division Cyanophycota] see Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002
                 [Class Cyanophyceae Schaffner (1909)] see Class Cyanobacteria Cavalier-Smith, 2002
                   [Order Hormogonales Atkinson 1905]
                     1 [Suborder Nostocales Borzì, 1914]
                     2 [Suborder Scytonematales]
                     3 [Suborder Stigonematales] see Order Stigonematales Geitler (1925)