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 3.1" nom. inval.]
                     [Genus "Arthrospira" Stizenberger ex Gomont 1892] see Genus Arthrospira E. Stizenberger ex Gomont 1892-1893[1893] [ICBN]
                       1 ["Arthrospira jenneri" [ICNB]] see Arthrospira jenneri (A.H. Hassall) E. Stizenberger ex Gomont 1892-1893[1893] [ICBN]
                       2 ["Arthrospira maxima" [ICNB]] see Arthrospira maxima W.A. Setchell & N.L.Gardner in N.L.Gardner 1917 [ICBN]
                       3 ["Arthrospira platensis" [ICNB]] see Arthrospira platensis (O. Nordst. in V.B. Wittrock & O. Nordst.) ex Gomont 1892-1893[1893] [ICBN]