plants Haeckel (1866) - plants
   Division Charophyta Migula (1889) - charophyte algae and embryophytes see charophytes
     Subdivision [Streptophytina] see [unranked] Streptophytina Lewis & McCourt (2004)
       Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883)
         Vascular Plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
           [Seed-Plants; Spermatophyta]
             Subclass Magnoliidae Novák ex Takht. (1967) - angiosperms
               Monocotyledons see Superorder Lilianae Takht. (1967)
                 Order Poales Burnett (1835) - grasses
                   01 Family Typhaceae Juss. (1789), nom. cons. - cat-tail family
                   02 Family Bromeliaceae Juss. (1789), nom. cons. - bromeliad family
                   03 Family Rapateaceae Dumort. (1829), nom. cons. - Rapatea family
                   04 Family Xyridaceae C.Agardh (1823), nom. cons. - yellow-eyed grass family
                   05 Family Eriocaulaceae Martinov (1820), nom. cons. - pipewort family
                   06 Family Mayacaceae Kunth (1842), nom. cons. - Mayaca family
                   07 Family Thurniaceae Engl. (1907), nom. cons. - Thurnia family
                   08 Family Juncaceae Juss. (1789), nom. cons. - rush family
                   09 Family Cyperaceae Juss. (1789), nom. cons. - sedge family
                   10 Family Restionaceae R.Br. (1810), nom. cons. - Restio family
                   11 Family Flagellariaceae Dumort. (1829), nom. cons. - Flagellaria family
                   12 Family Joinvilleaceae Toml. & A.C.Sm. (1970)
                   13 Family Ecdeiocoleaceae D.F.Cutler & Airy Shaw (1965)
                   14 Family Gramineae Juss. (1789), nom. cons. see Family Poaceae Barnhart (1895), nom. cons.