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
                   Subclass Synechococcophycideae
                     Order Pseudanabaenales L. Hoffm., Komárek & Kaštovský (2005)
                       Family Pseudanabaenaceaeᵀ Anagnostidis & Komárek (1988)
                         Subfamily Pseudanabaenoideaeᵀ
                           Genus Geitlerinema (Anagnostidis & Komárek) K. Anagnostidis 1989 [ICBN]
                             Geitlerinema acutissimum (H. Kufferath) K. Anagnostidis 1989
                             Geitlerinema amphibium (C.A. Agardh ex M. Gomont) K. Anagnostidis 1989
                             Geitlerinema deflexum (W. West and G.S. West) K. Anangnostidis 1989
                             Geitlerinema lemmermannii (J. Woloszynska) K. Anagnostidis 1989
                             Geitlerinema splendidum (R.K. Greville ex M. Gomont) K. Anagnostidis 1989
                             Geitlerinema unigranulatum (R.N. Singh) J. Komárek and M.T.P. Azevedo 2000