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 Dipsacales Juss. ex Bercht. & J.Presl (1820)
           Family Dipsacaceae Juss. (1789), nom. cons. - teasel family see Tribe Dipsaceae Rchb. (1831)
             Genus Knautia L. (1753)
               Knautia arvensis (L.) Coulter - bluebuttons