Taxonomy

• Kingdom: Plantae
• Clade: Tracheophytes
• Clade: Monilophytes
• Class: Polypodiopsida
• Subclass: Polypodiidae
• Order: Polypodiales
• Suborder: Polypodiineae
• Family: Dryopteridaceae
• Subfamily: Dryopteridoideae
• Genus: Polystichum
• Species: Polystichum setiferum

Presence

Present.

Conservation status

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

Notes

Possible confusion with P. aculeatum (L.) Roth, 1799, which has a pair of basal pinnae that are clearly shorter than the median pinnae, pinnules whose angle of attachment on the rachilla is more acute, and lacks petiolules and auricles at the base of the pinnules, except for the basal pinnules, while P. setiferum has a pair of basal pinnae that are slightly shorter than the median pinnae, pinnules whose angle of attachment on the rachilla is more obtuse, and petiolules and auricles at the base of every pinnule. P. aculeatum is usually a deeper green, with a leathery appearance, and has pinnules that tend to curve slightly towards the abaxial side of the frond along the edge.

Diploid (2n = 82).

Hybridizes with:

• P. aculeatum (L.) Roth, 1799 to produce P. × bicknellii Hahne, 1904, P;
• P. braunii (Spenn.) Fée, 1852 to produce P. × wirtgenii Hahne, 1904, P.

Photographs

Anomalies

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). Polystichum setiferum (Europe assessment). The IUCN Red List of Threatened Species, 2017. https://www.iucnredlist.org/species/83651011/85427494

• Prelli, R., & Boudrie, M. (2024). Les fougères et plantes alliées d’Europe (2nd ed., p. 408). Biotope.

• Tison, J.M., & de Foucault, B. (2014). Flora Gallica : Flore de France (p. 14). Biotope.