[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 Aveneae Dumort. (1824)
                       Subtribe Aveninae J.Presl (1830)
                         1 Genus Arrhenatherum P.Beauv. (1812)
                         2 Genus Avena L. (1753) - oats
                         3 Genus Deschampsia P.Beauv. (1812)
                         4 Genus Helictotrichon Besser, in Schult. & J.H. Schultes (1827)
                         5 Genus Koeleria Pers. (1805)
                         6 Genus Trisetum Pers. (1805)