living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Embryobionta Cronquist, Takht. & W.Zimm.
         Division Filicophyta see Phylum Pterophyta
           Subdivision Filicopsida Pfefferkorn (1976) see Class Filicopsida C.Agardh (1822)
             Order Salviniales Link (1833) - water ferns
               Family Azollaceae Wettst. (1903) see Family Salviniaceae Martinov (1820)
                 Genus Azolla Lam. (1783)
                   Azolla pinnata R.Br. - feathered mosquitofern see Azolla pinnata xxxR.Br.