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 Lycopsida - club-mosses see Class Lycopodiopsida Bartl. (1830)
    Count: [f†f] 3o;3f; †4o;14f [30 Aug 2022]
       Order Isoetales Prantl (1874) - quillworts see Order Isoëtales Prantl (1874)
      Count: [f†f] 1f; †1f [30 Aug 2022]
         1 Family Isoetaceae Rchb. (1828) see Family Isoëtaceae Rchb. (1828)
        Count: -
         2 Family †Chaloneriaceae Pigg & G.W.Rothwell (1983)
        Count: -