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 Rutidae Doweld (2001)
                   Superorder Crossosomatanae Doweld (2001)
                     Order Ixerbales Doweld (2001)
                       1 Family Strasburgeriaceae Tiegh. (1908), nom. cons.
                       2 Family Ixerbaceae Griseb. (1854), nom. inval. see Family Ixerbaceae Griseb. ex Doweld & Reveal (2008)
                       3 Family Aphloiaceae Takht. (1985)