Gymnadenia is a genus of orchids that is native to Eurasia, North America, and the Andes. This genus contains about 30 species, each with its unique characteristics, and are often used in traditional medicine. Some of the synonyms for the word gymnadenia include Platanthera, Habenaria, and Orchis. Platanthera is the largest synonym for the Gymnadenia genus. It comprises more than 100 species, and the flowers have a creamy-white or greenish color. Habenaria is another synonym for Gymnadenia and is a genus of terrestrial orchids that includes around 800 species. Orchis is a third synonym for Gymnadenia and is a genus containing over 60 species, commonly known as the "military orchid" for its green flowers.