embryophytes - land plants see Superphylum Embryophyta Engl. (1887)
   angiosperms - flowering plants see Subclass Magnoliidae Novák ex Takht. (1967)
     monocots see Clade Monocotyledoneae de Candolle 1817 [Judd, Soltis, Soltis & Graham 2020]
       commelinids see Clade Commelinidae Takhtajan 1967 [Graham, Saarela & Judd 2020]
         Order Poales Burnett (1835) - grasses
           01 Family Anarthriaceae D.F.Cutler & Airy Shaw (1965) see Family Restionaceae R.Br. (1810), nom. cons.
           02 Family Bromeliaceae Juss. (1789), nom. cons. - bromeliad family
           03 Family Centrolepidaceae Endl. (1836), nom. cons. - Centrolepis family see Family Restionaceae R.Br. (1810), nom. cons.
           04 Family Cyperaceae Juss. (1789), nom. cons. - sedge family
           05 Family Ecdeiocoleaceae D.F.Cutler & Airy Shaw (1965)
           06 Family Eriocaulaceae Martinov (1820), nom. cons. - pipewort family
           07 Family Flagellariaceae Dumort. (1829), nom. cons. - Flagellaria family
           08 Family Joinvilleaceae Toml. & A.C.Sm. (1970)
           09 Family Juncaceae Juss. (1789), nom. cons. - rush family
           10 Family Mayacaceae Kunth (1842), nom. cons. - Mayaca family
           11 Family Poaceae Barnhart (1895), nom. cons. - grass family
           12 Family Rapateaceae Dumort. (1829), nom. cons. - Rapatea family
           13 Family Restionaceae R.Br. (1810), nom. cons. - Restio family
           14 Family Thurniaceae Engl. (1907), nom. cons. - Thurnia family
           15 Family Typhaceae Juss. (1789), nom. cons. - cat-tail family
           16 Family Xyridaceae C.Agardh (1823), nom. cons. - yellow-eyed grass family