Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
Count: [*†*] 10p;24c;72o;262f;1685g; †5p;17c;56o;141f;593g
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
  Count: [*†*] 6p;9c;20o;58f;370g; †2p;12c;42o;103f;488g
     Superdivision Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001)
    Count: [*†*] 5p;5c;9o;12f;83g; †2p;12c;37o;72f;361g
       Division Gnetophyta Bessey (1907) [monotypic]
      Count: [*†*] 1c;3o;3f;3g; †24g [5 May 2023]
         Class Gnetopsida Eichler ex Kirpot. (1884)
        Count: [*†*] 3o;3f;3g; †24g [5 May 2023]
           Order Welwitschiales Skottsb. ex Reveal (1993) [monotypic]
          Count: [*†*] 1f;1g; †3g [5 May 2023]
             Family Welwitschiaceae Caruel (1879), nom. cons.
            Count: [*†*] 1g; †3g [5 May 2023]
               1 Genus Welwitschia Hook.f. (1862), nom. cons.
              Count: -
               2 Genus †Welwitschiella Dilcher, Bernardes-de-Oliveira, D.Pons & T.A.Lott (2005), nom. illeg. see Genus Priscowelwitschia Dilcher, Bernardes-de-Oliveira, D.Pons & T.A.Lott (2005)
              Count: -
               3 Genus †Welwitschiophyllum Dilcher, Bernardes-de-Oliveira, D.Pons & T.A.Lott (2005)
              Count: -
               4 Genus †Welwitschiostrobus Dilcher, Bernardes-de-Oliveira, D.Pons & T.A.Lott (2005)
              Count: -