Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 23; Count: [*†*] 10p;24c;72o;262f;1685g; †5p;17c;56o;141f;593g
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
  Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 47; Count: [*†*] 6p;9c;20o;58f;370g; †2p;12c;42o;103f;488g
     Superdivision Pteridophytanae Doweld (2001) [monotypic] see Superphylum Pteridophytanae Doweld (2001)
    Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 47; Count: [*†*] 1p;4c;11o;46f;287g; †5o;31f;127g [30 Mar 2023]
       Division Monilophyta Cantino & Donoghue
      Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 47; Count: [*†*] 4c;11o;46f;287g; †5o;31f;127g [30 Mar 2023]
         Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns
        Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 49; Count: [*†*] 7o;42f;273g; †7f;42g [30 Mar 2023]
           Order Salviniales Link (1833) - water ferns
          Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 50; Count: [*†*] 2f;5g; †2f;5g [23 Mar 2023]
             Family Marsileaceae Mirb. (1802) - clover ferns
            Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 50; Count: [*†*] 3g; †2g [23 Mar 2023]
               Genus Regnellidium Lindm. (1904)
              Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 50; Count: -