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)
           Family Crassulaceae J.St.-Hil. (1805), nom. cons. - stonecrop family
             1 Subfamily Sedoideae
             1.0.1 Subfamily Sempervivoideae Arn. see Subfamily Sedoideae
             1.0.2 Subfamily Echeverioideae see Tribe Echeverieae
             2 Subfamily Kalanchoideae A.Berger
             2.0 Subfamily Cotyledonoideae see Subfamily Kalanchoideae A.Berger
             3 Subfamily Crassuloideae Burnett