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 Saxifraganae Reveal (1994)
                     Order Haloragales Bromhead (1838) see Order Saxifragales Bercht. & J.Presl (1820)
                       1 Family Aphanopetalaceae Doweld (2001) [monotypic]
                       2 Family Penthoraceae Rydb. ex Britton (1901), nom. cons.
                       3 Family Tetracarpaeaceae Nakai (1943)
                       4 Family Haloragaceae R.Br. (1814), nom. cons.