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 Campanulales Juss. ex Bercht. & J.Presl (1820) see Order Asterales Link (1829)
           Family Compositae Giseke (1792), nom. cons.
             Genus Hieracium L. (1753)
               Subgenus Hieracium subg. Hieracium
                 1 Hieracium amplexicaule L.
                 2 Hieracium murorum L. - wall hawkweed
                 3 Hieracium maculatum Sm. - spotted hawkweed
                 4 Hieracium vulgatum Fr.
                 5 Hieracium umbellatum L. (1753) - narrowleaf hawkweed
                 6 Hieracium sabaudum L. (1753) - New England hawkweed
                 7 Hieracium laevigatum Willd. - smooth hawkweed