[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)
           "Eudicots" see Clade Eudicotyledoneae Donoghue, Doyle & Cantino 2007 [Donoghue, Doyle & Cantino 2020]
             "Core Eudicots" see Clade Gunneridae Soltis, Soltis & Judd 2007 [Soltis, Soltis & Judd 2020]
               Rosidae Takht. (1967) see Superorder Rosanae Takht. (1967)
                 Fabids see Clade Fabidae Judd, Soltis & Soltis 2007 [Judd, Soltis, Soltis & Cantino 2020]
                   Order Rosales Bercht. & J.Presl (1820)
                     Family Ulmaceae Mirb. (1815), nom. cons. - elm family
                       .1 Subfamily Ulmoideae see Family Ulmaceae Mirb. (1815), nom. cons.
                       .2 Subfamily Celtidoideae Engl. see Family Cannabaceae Martinov (1820), nom. cons.
                       1 Genus Ampelocera Klotzsch (1847)
                       2 Genus Hemiptelea Planch. (1872)
                       3 Genus Holoptelea Planch. (1848)
                       4 Genus Phyllostylon Capanema ex Bentham & Hook.f. (1880)
                       5 Genus Planera J.F. Gmelin (1791)
                       6 Genus Ulmus L. (1753) - elms
                       7 Genus Zelkova Spach (1841), nom. cons.