Stock Photo - Fragile blister fern, A: Cystopteris fragilis Bernhardi - Fragile Blister Fern, B: Woodsia hyperborea Koch - Northern Stone Fern or Eyelash Fern, Family: 2. Polypodiaceae - Spotted Fungus Family, Plate 11, after p. 38 (Vol. 1), 1886, Otto Wilhelm Thomé: Prof. Dr. Thomé's Flora von Deutschland, Österreich und der Schweiz in Wort und Bild. Gera-Untermhaus: Verlag von Fr. Eugen Köhler, [1886].

Stock Photo: Fragile blister fern, A: Cystopteris fragilis Bernhardi - Fragile Blister Fern, B: Woodsia hyperborea Koch - Northern Stone Fern or Eyelash Fern, Family: 2.

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