| Epipactis helleborine (L.) Crantz | Accepted |  | WCSP | 
	
		| Epipactis helleborine f. alba (Webster) B.Boivin | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. albifolia M.R.Lowe | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. aspromontana (Bartolo, Pulv. & Robatsch) H.Baumann & R.Lorenz | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. bithynica (Robatsch) Kreutz | Accepted |  | WCSP | 
	
		| Epipactis helleborine f. brevibracteata (Zapal.) Bordz. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. condensata (Boiss. ex D.P.Young) H.Sund. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. confusa (D.P.Young) H.Sund. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. degenii (Szentp. & Mónus) Kreutz | Accepted |  | WCSP | 
	
		| Epipactis helleborine subsp. densifolia (W.Hahn, Passin & R.Wegener) Kreutz | Accepted |  | WCSP | 
	
		| Epipactis helleborine f. dentata (Zapal.) Soó | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. dilatata (Asch. & Graebn.) Soó | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. distans (Arv.-Touv.) R.Engel & Quentin | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. gracilis (Dageforde ex Hegi) Pauca & Morariu | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. helleborine | Accepted |  | WCSP | 
	
		| Epipactis helleborine var. herbacea (Lindl.) S.N.Mitra | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. interrupta Beck | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. intrusa (Lindl.) S.N.Mitra | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. lancifolia (Zapal.) Bordz. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. latifolia (L.) Syme | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. latifolia (L.) A.Blytt | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. latina W.Rossi & E.Klein | Accepted |  | WCSP | 
	
		| Epipactis helleborine subsp. leptochila (Godfery) Soó | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. leutei (Robatsch) Kreutz | Accepted |  | WCSP | 
	
		| Epipactis helleborine f. luteola P.M.Br. | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. microphylla (Ehrh.) Rchb.f. | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. minor R.Engel | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. minor (R.Engel) R.Engel | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. minor (R.Engel) P.Delforge | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. molochina (P.Delforge) Kreutz | Accepted |  | WCSP | 
	
		| Epipactis helleborine f. monotropoides (Mousley) Scoggan | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. montana (Zapal.) Bordz. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. moratoria Riech. & Zirnsack | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. muelleri (Godfery) O.Bolòs, Masalles & Vigo | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. neerlandica (Verm.) Buttler | Accepted |  | WCSP | 
	
		| Epipactis helleborine var. neerlandica Verm. | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. obtusa (Zapal.) Soó | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. ohwii (Fukuy.) H.J.Su | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. orbicularis (K.Richt.) E.Klein | Accepted |  | WCSP | 
	
		| Epipactis helleborine var. orbicularis (K.Richt.) Verm. | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. orbicularis (C. Richt) Soó | Synonym |  | TRO | 
	
		| Epipactis helleborine var. pallens Gaudin | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. papillosa (Franch. & Sav.) T.Hashim. | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. parviflora (Zapal.) Bordz. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. persica (Soó) H.Sund. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. phyllanthes (G.E.Sm.) H.Sund. | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. platyphylla Irmisch | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. pontica (Taubenheim) H.Sund. | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. przemysliensis (Zapal.) Verm. | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. rectilinguis Murb. | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. remota (Zapal.) Bordz. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. renzii (Robatsch) Løjtnant | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. renzii (Robatsch) J.Claess. Kleynen & Wielinga | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. rubiginosa Crantz | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. sayekiana (Makino) T.Hashim. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. schubertiorum (Bartolo, Pulv. & Robatsch) Kreutz | Accepted |  | WCSP | 
	
		| Epipactis helleborine var. tangutica (Schltr.) S.C.Chen & G.H.Zhu | Accepted |  | WCSP | 
	
		| Epipactis helleborine var. thomsonii (Hook.f.) S.N.Mitra | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. thomsonii (Hook. f.) Karth. | Synonym |  | TRO | 
	
		| Epipactis helleborine var. thomsonii (Hook. f.) Aswal | Synonym |  | TRO | 
	
		| Epipactis helleborine var. thomsonii (Hook. f.) R.R. Stewart | Synonym |  | TRO | 
	
		| Epipactis helleborine subsp. transcaucasica A.P.Khokhr. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. tremolsii (Pau) E.Klein | Accepted |  | WCSP | 
	
		| Epipactis helleborine subsp. troodi (H.Lindb.) H.Sund. | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. varians Crantz | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. varians (Crantz) H.Sund. | Synonym |  | WCSP | 
	
		| Epipactis helleborine f. variegata (Webster) B.Boivin | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. violacea (Dur.-Doq.) Rchb.f. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. viridans (Crantz) O.Schwarz | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. viridans Crantz | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. viridiflora (Hoffm.) Bordz. | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. viridiflora (Hoffm.) O.Schwarz | Synonym |  | WCSP | 
	
		| Epipactis helleborine subsp. viridis Soó | Synonym |  | WCSP | 
	
		| Epipactis helleborine var. youngiana (A.J.Richards & A.F.Porter) Kreutz | Synonym |  | WCSP |