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Adder’s Tongue Fern (Ophioglossum vulgatum) is a small, unusual fern found in damp meadows and grasslands across parts of Europe and other temperate regions. Its common name comes from the narrow fertile spike that resembles a tiny tongue.
Identification
The plant usually produces a single broad sterile blade and a separate upright fertile spike arising from the same stalk. It is easy to overlook because it remains low and blends into surrounding grass.
Traditional Use
European folk herbalism recorded adder’s tongue mainly in external preparations associated with wounds, bruises, and skin injuries. Historic ointments and infused fats are part of its traditional record.
Research Context
Modern clinical study is sparse. Most contemporary interest is botanical, ecological, and ethnobotanical rather than evidence for internal therapeutic use.
Ecology
Adder’s tongue can be associated with old, relatively undisturbed grasslands. Local populations may be uncommon, so wild harvesting can create conservation concerns.
Safety
Reliable modern internal-use safety and dosing information is limited. Because common names can be shared across unrelated plants, the botanical name is especially important.
Folklore
Its serpent-like fertile spike helped generate the name “adder’s tongue” and connected the plant with old European wound lore and the historical doctrine of signatures.
Educational information only.