Kingdom [Plantae] Haeckel (1866) - plants
Count: [f†f] 7p;5c;9o;12f; †7c;31o;76f
   Division Pteridophyta Schimp. (1879) see Subphylum Pteridophytina (Eichler) Cavalier-Sm. (1998)
  Count: [f†f] 3c;7o;11f; †5c;21o;50f [30 Aug 2022]
     Class †Horneophytopsida S.V.Meyen (1978) [monotypic] see Class Langiophytopsida Doweld (2001)
    Count: [†f] †1o;1f [30 Aug 2022]
       Order †Horneophytales Novák (1961) [monotypic] see Order Langiophytales Doweld (2001)
      Count: [†f] †1f [30 Aug 2022]
         1 Family †Horneophytaceae Darrah (1960) see Family Langiophytaceae Doweld (2001)
        Count: -