Fateryga, A.V., and V.V. Fateryga. “The Genus Epipactis Zinn (Orchidaceae) in the Flora of Russia”. Turczaninowia 21, no. 4 (December 11, 2018): 19-34. Accessed September 18, 2025. https://turczaninowia.asu.ru/article/view/4765.