Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Liliopsida Batsch (1802) see Class Magnoliopsida Brongn. (1843)
     Subclass Triurididae Takht. ex Reveal (1992) see Order Pandanales R.Br. ex Bercht. & J.Presl (1820)
       Superorder Triuridanae Thorne ex Reveal (1992) see Order Pandanales R.Br. ex Bercht. & J.Presl (1820)
         Order Petrosaviales Takht. (1997)
           Family Petrosaviaceae Hutch. (1934), nom. cons.
             1 Genus Petrosavia Becc. (1871)
             1.0.1 Genus Miyoshia Kawam. (1907) see Genus Petrosavia Becc. (1871)
             1.0.2 Genus Protolirion see Genus Petrosavia Becc. (1871)