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 Oleales Lindl. (1833) see Order Lamiales Bromhead (1838)
           Family Oleaceae Hoffmanns. & Link (1809), nom. cons. - olive family
             Genus Forsythia Vahl (1804)
               1 Forsythia viridissima Lindl. (1846) - greenstem forsythia
               2 Forsythia suspensa (Thunb.) Vahl - weeping forsythia
               3 Forsythia ×intermedia Zabel