Taxonomy

• Kingdom: Plantae
• Clade: Tracheophytes
• Clade: Monilophytes
• Class: Polypodiopsida
• Subclass: Polypodiidae
• Order: Polypodiales
• Suborder: Polypodiineae
• Family: Polypodiaceae
• Subfamily: Polypodioideae
• Genus: Polypodium
• Species: Polypodium cambricum

Presence

Present.

Conservation status

• Red List (Metropolitan France): LC Least Concern
• Red List (Europe): LC Least Concern

Notes

Possible confusion with P. interjectum Shivas, 1961 or P. vulgare L., 1753, which have narrower fronds (length/width ratio > 2) and lack paraphyses, while P. cambricum has wider fronds (length/width ratio < 2) and paraphyses in the sori.

Diploid (2n = 74).

Hybridizes with:

• P. interjectum Shivas, 1961 to produce P. × shivasiae Rothm., 1962, P;
• P. vulgare L., 1753 to produce P. × font-queri Rothm., 1937, P.

Photographs

Sources

• Badré, F., & Deschatres, R. (1979). Les Ptéridophytes de la France : liste commentée des espèces (taxinomie, cytologie, écologie et répartition générale). Candollea, 34(2), 379-457. https://doi.org/10.5169/seals-880127

• Christenhusz, M., Bento Elias, R., Dyer, R., Ivanenko, Y., Rouhan, G., Rumsey, F., & Väre, H. (2017). Polypodium cambricum (Europe assessment). The IUCN Red List of Threatened Species, 2017. https://www.iucnredlist.org/species/83650696/85447687

• Prelli, R., & Boudrie, M. (2024). Les fougères et plantes alliées d’Europe (2nd ed., p. 418). Biotope.

• Tison, J.M., & de Foucault, B. (2014). Flora Gallica : Flore de France (p. 23). Biotope.