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 Monocotyledones see Class Liliopsida Batsch (1802)
         Order Microspermae
           Family Orchidaceae Juss. (1789), nom. cons. - orchid family
             Genus Epipactis Zinn (1757)
               1 Epipactis palustris (L.) Crantz - marsh orchid
               2 Epipactis atrorubens (O.Hoffm.) Besser - royal helleborine
               3 Epipactis helleborine (L.) Crantz - broadleaf helleborine
               4 Epipactis muelleri Godfery (1921)
               5 Epipactis leptochila (Godf.) Godf.