; Orch. Eur. Annot. (Mem. Mus. Hist. Nat. Paris 4: 47: 1818) 25 (1817)
Distribution: Europe to C-Asia and N-Iran. The genus concept has been expanded very much (based on molecular results), and includes now parts of the old Orchis s. l. Recent attempts to split it further and redefine the genus limits have not been widely accepted.
= Anteriorchis E.Klein & Strack; Phytochemistry 28: 2136 (1989)
= Herorchis D.Tyteca & D.Klein; Jour. Eur. Orch. 40(3): 539 (2008)
= Paludorchis P.Delforge; Naturalistes Belges 90(Orchid.22): 24 (2009)
= Rauranita Grélet; Bull. Soc. Bot. Deux-Sèvres 1894: 36 (1894)
= Vermeulenia Á.Löve & D.Löve; Acta Bot. Neerl. 21(5): 554 (1972), nom. nov.
= xAnacampaludorchis P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xAnacampterorchis P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xAnacampteulenia P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xAnteriocamptis P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xAnterioherorchis P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xAnteriomeulenia P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xAnteriopaludorchis P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xHeromeulenia P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xHeropaludorchis P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)
= xPaludomeulenia P.Delforge; Naturalistes Belges 90 (Orchid. 22): 30 (2009)