Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Magnoliidae Novák ex Takht. (1967) - angiosperms
       Superorder Magnolianae Takht. (1967)
         Order Aristolochiales Juss. ex Bercht. & J.Presl (1820) see Order Piperales Bercht. & J.Presl (1820)
           Family Aristolochiaceae Juss. (1789), nom. cons. - birthwort family
             Subfamily Aristolochioideae Burnett
               Tribe Bragantieae
                 1 Genus Asiphonia see Genus Thottea Rottboell (1783)
                 2 Genus Thottea Rottboell (1783)