plants Haeckel (1866) - plants
Count: [f] 1p;2c;82o;474f
   Division Charophyta Migula (1889) - charophyte algae and embryophytes see charophytes
  Count: [f] 2c;82o;474f
     Subdivision [Streptophytina] see [unranked] Streptophytina Lewis & McCourt (2004)
    Count: [f] 2c;82o;474f
       Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883)
      Count: [f] 82o;474f
         Vascular Plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
        Count: [f] 82o;474f [8 Jun 2023]
           [Ferns]
          Count: [f†*] 11o;46f;162g; †4g [4 Jun 2023]
             Subclass Ophioglossidae Klinge (1882)
            Count: [g] 2o;2f;6g [4 Jun 2023]
               Order Psilotales Prantl (1884) [monotypic]
              Count: [g] 1f;2g [4 Jun 2023]
                 Family Psilotaceae J.W.Griff. & Henfr. (1855) - whisk ferns
                Count: [g] 2g
                   1 Genus Psilotum Sw. (1801)
                  Count: -
                   2 Genus Tmesipteris Bernh. (1801)
                  Count: -