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 Violales Perleb (1826) see Order Malpighiales Juss. ex Bercht. & J.Presl (1820)
           Family Violaceae Batsch (1802), nom. cons. - violet family
             Genus Viola L. (1753)
               Viola curtisii E.Forst. (1831)