An article of the Israeli botanist Asaf Shifman, issued in 2014 in Jour.Eur.Orch. 46 (3/4): 587-615, divides Epipactis veratrifolia into two subspecies. The nominal subspecies occurs in the Cyprian Troodos mountains, moreover in Turkey, Northern Israel, Lebanon, and further east to Iran, Afghanistan, Nothern India, Nepal, Butan, Southern China, and Burma. It is usually growing in wet areas in mountains.
The subspecies oaseana shown here, which is separated in the article, is growing further south. Populations in oases of Southern Israel, Jordan, Egypt, different Arabic States, Ethiopia, and Somalia are belonging to it, as well as the Episkopi population on Cyprus. The southern subspecies differs from the nominal subspecies by somewhat bigger blossoms and longer leaves among other attributes.