Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Lamiidae Takht. ex Reveal (1993) see [unranked] lamiids
       Superorder Loasanae R.Dahlgren ex Reveal (1996) see Order Cornales Link (1829)
         Order Loasales Bessey (1907) see Order Cornales Link (1829)
           Family Loasaceae Juss. (1804), nom. cons. - Loasa family
             Subfamily Loasoideae Gilg
               Tribe Klaprothieae Gilg (1894)
                 1 Genus Klaprothia Kunth, in Humb. et al. (1823)
                 2 Genus Plakothira J. Florence (1986)
                 3 Genus Sclerothrix C.Presl (1834)