Cystopteris fragilis (L.) Bernh.
      
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2 315718 Cystopteris fragilis (L.) Bernh. [80 824987 Polypodium fragile L.] Dryopteridaceae
T. Moore, Pop. Hist. Brit. Ferns, ed. 3: t. 10, fig. 1 (1859) [W.H. Fitch]