Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
       Subkingdom Pteridobiotina Britton & A. Br. (1896)
         Superphylum Cycadophytanae Doweld (2001)
           Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
             Subphylum Magnoliophytina Reveal (1996)
               Class Magnoliopsida Brongn. (1843)
                 Subclass Hamamelididae Takht. (1967)
                   Superorder Hamamelidanae Takht. (1967) see Order Saxifragales Bercht. & J.Presl (1820)
                     6 Order Cercidiphyllales Hu ex Reveal (1993) [monotypic] see Order Saxifragales Bercht. & J.Presl (1820)
                     7 Order Altingiales Doweld (1998) see Order Saxifragales Bercht. & J.Presl (1820)
                     8 Order Hamamelidales Griseb. (1854) [monotypic] see Order Saxifragales Bercht. & J.Presl (1820)