1. Eurasian fern with simple lanceolate fronds
   "Hart's-tongue ferns grew in the limestone crevices";
   - hart's-tongue fern, Asplenium scolopendrium, Phyllitis scolopendrium
    
2. Tropical American terrestrial fern with leathery lanceolate fronds; sometimes placed in genus Polybotrya
   "The tropical hart's-tongue fern flourished in the humid forest";
   - hart's-tongue fern, Olfersia cervina, Polybotrya cervina, Polybotria cervina

Derived forms: hart's-tongues

Type of: fern

Part of: Asplenium, genus Asplenium

Encyclopedia: Hart's-tongue