Genus Ophioglossum is a type of fern that is commonly known as adder's tongue. It is a unique plant that produces spores near the base of its fronds, which resemble the tongue of a snake. There are various synonyms for the genus Ophioglossum, including serpentine grass, serpent's tongue, and snake's tongue fern. These synonyms reflect the plant's distinctive appearance and its associations with snakes. Adder's tongue is a fascinating plant that is easy to grow and adds a touch of exoticism to any garden. Its intriguing shape and unusual name make it a conversation piece and a favorite among fern enthusiasts.