Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
Count: [*†*] 10p;24c;72o;262f;1685g; †5p;17c;56o;141f;593g
   Subkingdom Lycopodiobiotina Doweld (2001)
  Count: [*†*] 1p;2c;3o;3f;6g; †3p;5c;14o;38f;105g [2 Mar 2023]
     Division Lycopodiophyta D.H.Scott (1900) see Phylum Lycopodiophyta D.H.Scott (1900)
    Count: [*†*] 2c;3o;3f;6g; †4o;25f;66g [2 Mar 2023]
       Class Isoëtopsida Rolle (1884)
      Count: [*†*] 2o;2f;2g; †2o;12f;31g [2 Mar 2023]
         Order Isoëtales Prantl (1874)
        Count: [*†*] 1f;1g; †3f;7g [2 Mar 2023]
           Family †Nathorstianaceae Němejc [monotypic]
          Count: [†*] †1g [2 Mar 2023]
             1 Genus †Nathorstiana P.B.Richt. (1909)
            Count: -