[plants] Haeckel (1866) - plants
   vascular plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
     euphyllophytes see Clade Euphyllophyta Lecointre & Le Guyader 2006 [Cantino & Donoghue 2020]
       Spermatophyta Britton & Brown 1896 [Crane & Kenrick 1997], nom. cl. inval. - seed plants see Clade Spermatophyta Britton & Brown 1896 [Cantino, Doyle & Donoghue 2020]
         Class Magnoliopsida Brongn. (1843)
           Monocotyledons see Superorder Lilianae Takht. (1967)
             Commelinids see Clade Commelinidae Takhtajan 1967 [Graham, Saarela & Judd 2020]
               Order Poales Burnett (1835) - grasses
                 01 Family Bromeliaceae Juss. (1789), nom. cons. - bromeliad family
                 02.1 Family Sparganiaceae Hanin (1811), nom. cons. - bur-reed family see Family Typhaceae Juss. (1789), nom. cons.
                 02.2 Family Typhaceae Juss. (1789), nom. cons. - cat-tail family
                 03.1 Family Rapateaceae Dumort. (1829), nom. cons. - Rapatea family
                 03.2 Family Xyridaceae C.Agardh (1823), nom. cons. - yellow-eyed grass family
                 04 Family Eriocaulaceae Martinov (1820), nom. cons. - pipewort family
                 05 Family Thurniaceae Engl. (1907), nom. cons. - Thurnia family
                 06 Family Juncaceae Juss. (1789), nom. cons. - rush family
                 07 Family Cyperaceae Juss. (1789), nom. cons. - sedge family
                 08 Family Flagellariaceae Dumort. (1829), nom. cons. - Flagellaria family
                 09 Family Mayacaceae Kunth (1842), nom. cons. - Mayaca family
                 10 Family Anarthriaceae D.F.Cutler & Airy Shaw (1965) see Family Restionaceae R.Br. (1810), nom. cons.
                 11 Family Restionaceae R.Br. (1810), nom. cons. - Restio family
                 12 Family Centrolepidaceae Endl. (1836), nom. cons. - Centrolepis family see Family Restionaceae R.Br. (1810), nom. cons.
                 13 Family Joinvilleaceae Toml. & A.C.Sm. (1970)
                 14 Family Ecdeiocoleaceae D.F.Cutler & Airy Shaw (1965)
                 15 Family Gramineae Juss. (1789), nom. cons. see Family Poaceae Barnhart (1895), nom. cons.