living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Embryobionta Cronquist, Takht. & W.Zimm.
         Division Magnoliophyta Cronquist, Takht. & Zimmerm. (1966) see Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996)
           Class Magnoliopsida Brongn. (1843)
             Subclass Magnoliidae Novák ex Takht. (1967) - angiosperms
               Order Papaverales Dumort. (1829) see Order Ranunculales Juss. ex Bercht. & J.Presl (1820)
                 Genus Hypecoum L. (1753) - St. John's worts
                 Genus Pteridophyllum Siebold & Zucc. (1843)
                 1 Family Papaveraceae Juss. (1789), nom. cons. - poppy family
                 2 Family Fumariaceae Marquis (1820), nom. cons. - fumitory family see Subfamily Fumarioideae (Marquis) Eaton