Flora van Nederland Haeckel (1866) - plants
   Division Spermatophyta Goebel (1882) see Phylum Spermatophyta Goebel (1882)
     Subdivision Angiospermae J. Lindley (1830) see Infraphylum Angiospermae auct.
       Class Dicotyledones see Class Magnoliopsida Brongn. (1843)
         Order Rosales Bercht. & J.Presl (1820)
           Family Leguminosae Juss. (1789), nom. cons. - legumes
             Genus Trifolium L. (1753) - clover
               Trifolium arvense L. - acker klee