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 Bidens L. (1753)
               1 Bidens frondosa L. - bur marigold
               2 Bidens tripartita L. - threelobe beggarticks
               3 Bidens cernua L. - bur marigold
               4 Bidens connata Muhl. ex Willd. - purplestem beggarticks