Hart's-tongue fern, scientifically known as Asplenium scolopendrium, has various synonyms in different regions worldwide. In Europe, it is commonly called the European Asplenium Fern, or simply Asplenium Fern, due to its prevalence in the continent. In North America, it is referred to as Long Beech Fern or Scolopendrium Fern. The name "Hart's-tongue Fern" itself comes from its unique long and narrow fronds resembling the tongue of a stag or deer. In Japan, it is known as "Kanaga-shida," while in Ireland, it is called "Scolopendra Fern" due to its resemblance to the legs of a centipede. These diverse synonyms showcase the fern's widespread presence and its distinct attributes.