embryophytes - land plants see Superphylum Embryophyta Engl. (1887)
   angiosperms - flowering plants see Subclass Magnoliidae Novák ex Takht. (1967)
     eudicots see Clade Eudicotyledoneae Donoghue, Doyle & Cantino 2007 [Donoghue, Doyle & Cantino 2020]
       core eudicots see Clade Gunneridae Soltis, Soltis & Judd 2007 [Soltis, Soltis & Judd 2020]
         rosids see Clade Rosidae Takhtajan 1967 [Judd, Cantino, Soltis & Soltis 2020]
           fabids see Clade Fabidae Judd, Soltis & Soltis 2007 [Judd, Soltis, Soltis & Cantino 2020]
             Order Oxalidales Bercht. & J.Presl (1820)
               1 Family Brunelliaceae Engl. (1897), nom. cons. - Brunellia family
               2 Family Cephalotaceae Dumort. (1829), nom. cons. - Australian pitcher-plant family
               3 Family Connaraceae R.Br. (1818), nom. cons. - Connarus family
               4 Family Cunoniaceae R.Br. (1814), nom. cons. - Cunonia family
               5 Family Elaeocarpaceae Juss. (1816), nom. cons. - Elaeocarpus family
               6 ?Family Huaceae A.Chev. (1947)
               7 Family Oxalidaceae R.Br. (1818), nom. cons. - wood-sorrel family