embryophytes - land plants see Superphylum Embryophyta Engl. (1887)
   angiosperms - flowering plants see Subclass Magnoliidae Novák ex Takht. (1967)
     magnoliids see Clade Magnoliidae Takhtajan 1967 [Judd, Soltis & Soltis 2020]
       Order Piperales Bercht. & J.Presl (1820)
         1 Family Aristolochiaceae Juss. (1789), nom. cons. - birthwort family
         2 Family Hydnoraceae C.Agardh (1821), nom. cons. - Hydnora family see Family Aristolochiaceae Juss. (1789), nom. cons.
         3 Family Lactoridaceae Engl. (1888), nom. cons. - Lactoris family see Family Aristolochiaceae Juss. (1789), nom. cons.
         4 Family Piperaceae Giseke (1792), nom. cons. - pepper family
         5 Family Saururaceae F.Voigt (1811), nom. cons. - lizard's-tail family