Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Dilleniidae Takht. ex Reveal & Tahkt. (1993) see Order Dilleniales DC. ex Bercht. & J.Presl (1820)
       Superorder Ericanae Takht. (1967) see Order Ericales Bercht. & J.Presl (1820)
         Order Diapensiales Engl. & Gilg (1924) see Order Ericales Bercht. & J.Presl (1820)
           Family Diapensiaceae Lindl. (1836), nom. cons. - Diapensia family
             Tribe Diapensieae A.Gray (1856)
               1 Genus Diapensia L. (1753)
               2 Genus Pyxidanthera Michx. (1803)
               3 Genus Berneuxia Decaisne (1873)
               4 Genus Shortia Torrey & A.Gray (1842), nom. cons.
               4.0 Genus Schizocodon Siebold & Zucc. (1843) see Genus Shortia Torrey & A.Gray (1842), nom. cons.