Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Rosidae Takht. (1967) see Superorder Rosanae Takht. (1967)
       Superorder Saxifraganae Reveal (1994)
         Order Saxifragales Bercht. & J.Presl (1820)
           1 Family Tetracarpaeaceae Nakai (1943)
           2 Family Penthoraceae Rydb. ex Britton (1901), nom. cons.
           3 Family Crassulaceae J.St.-Hil. (1805), nom. cons. - stonecrop family
           4 Family Saxifragaceae Juss. (1789), nom. cons. - saxifrage family
           5 Family Grossulariaceae DC. (1805), nom. cons. - currant family
           6 Family Pterostemonaceae Small (1905), nom. cons. see Family Iteaceae J.Agardh (1858), nom. cons.
           7 Family Iteaceae J.Agardh (1858), nom. cons.
           8 Family Eremosynaceae Dandy (1959) see Family Escalloniaceae R.Br. ex Dumort. (1829), nom. cons.
           9 Family Vahliaceae Dandy (1959)