Definition of 'hart's-tongue'

Noun

1. tropical American terrestrial fern with leathery lanceolate fronds; sometimes placed in genus Polybotrya
      Synonyms: hart's-tongue fern Olfersia cervina Polybotrya cervina Polybotria cervina
2. Eurasian fern with simple lanceolate fronds
      Synonyms: hart's-tongue fern Asplenium scolopendrium Phyllitis scolopendrium

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