[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
                 Family Gramineae Juss. (1789), nom. cons. see Family Poaceae Barnhart (1895), nom. cons.
                   Subfamily Pooideae
                     Tribe Triticeae Dumort. (1824)
                       1 Genus Aegilops L. (1753)
                       2 Genus Elymus L. (1753)
                       3 Genus Hordeum L. (1753) - barley
                       4 Genus Leymus Hochst. (1848)
                       5 Genus Secale L. (1753) - rye
                       6 Genus Triticum L. (1753) - wheat