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 Caryophyllidae Takht. (1967) see Order Caryophyllales Juss. ex Bercht. & J.Presl (1820)
                   Superorder Caryophyllanae Takht. (1967)
                     Order Portulacales Dumort. (1829) see Suborder Portulacineae Engl. (1898)
                       Suborder Basellineae Doweld (2001), nom. inval.
                         1 Family Montiaceae Raf. (1820)
                         2 Family Hectorellaceae Philipson & Skipw. (1961) see Family Portulacaceae Juss. (1789), nom. cons.
                         3 Family Basellaceae Raf. (1837), nom. cons. - Basella family
                         4 Family Halophytaceae A.Soriano (1984)
                         5 Family Portulacariaceae Doweld (2001) [monotypic] see Family Didiereaceae Radlk. (1896), nom. cons.
                         6 Family Didiereaceae Radlk. (1896), nom. cons. - Didierea family