Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Liliopsida Batsch (1802) see Class Magnoliopsida Brongn. (1843)
     Subclass Aridae Takht. (1997) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
       Superorder Aranae Thorne ex Reveal (1992) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
         Order Arales Juss. ex Bercht. & J.Presl (1820) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
           Family Lemnaceae Martinov (1820), nom. cons. - duckweed family see Subfamily Lemnoideae Babington (1843)
             Subfamily Wolffioideae
               Genus Pseudowolffia