Phylum [Tracheophyta] Sinnott ex Caval.-Sm. (1998) - vascular plants
Count: [*] 2c;14o;51f;337g
   Subphylum Polypodiophytina Reveal (1996) [monotypic]
  Count: [*] 1c;11o;48f;319g [26 Jun 2023]
     Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns
    Count: [*] 11o;48f;319g [26 Jun 2023]
       Subclass Ophioglossidae Klinge (1882)
      Count: [*] 2o;2f;12g [16 Jun 2023]
         E Order Psilotales Prantl (1884) [monotypic]
        Count: [*] 1f;2g [16 Jun 2023]
         F Order Ophioglossales Link (1833) [monotypic]
        Count: [*] 1f;10g [16 Jun 2023]