Dryopteris dilatata (Hoffm.) A.Gray, 1848
Common names
- 🇬🇧 Broad Buckler-fern
- 🇫🇷 Dryoptéride dilatée, Dryoptéris dilaté, Fougère dilatée
Taxonomy
- Kingdom: Plantae
- Clade: Tracheophytes
- Clade: Monilophytes
- Class: Polypodiopsida
- Subclass: Polypodiidae
- Order: Polypodiales
- Suborder: Polypodiineae
- Family: Dryopteridaceae
- Subfamily: Dryopteridoideae
- Genus: Dryopteris
- Species: Dryopteris dilatata
Presence
Present.
Conservation status
- Red List (Metropolitan France): LC Least Concern
- Red List (Europe): LC Least Concern
Notes
Possible confusion with D. carthusiana (Vill.) H.P.Fuchs, 1959, which has few light brown, concolorous scales on the petiole, while D. dilatata has abundant bicolor scales on the petiole.
Possible confusion with D. remota (A.Braun ex Döll) Druce, 1908, which has a black spot at the junction of the pinnae with the rachis, visible on the abaxial side.
The following infraspecific taxa are accepted:
- D. dilatata subsp. dilatata (Hoffm.) A.Gray, 1848: allotetraploid (2n = 164), P;
- D. dilatata subsp. lusitanica Fraser-Jenk., Andreis & Vasco Silva, 2021.
Hybridizes with:
- D. carthusiana (Vill.) H.P.Fuchs, 1959 to produce D. × deweveri (J.T.Jansen) Jansen & Wacht., 1934, P;
- D. expansa (C.Presl) Fraser-Jenk. & Jermy, 1977 to produce D. × ambroseae Fraser-Jenk. & Jermy, 1977, 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
Prelli, R., & Boudrie, M. (2024). Les fougères et plantes alliées d’Europe (2nd ed., p. 378). Biotope.
Tison, J.M., & de Foucault, B. (2014). Flora Gallica : Flore de France (p. 13). Biotope.
Väre, H., Bento Elias, R., Christenhusz, M., Dyer, R., Ivanenko, Y., Rouhan, G., & Rumsey, F. (2017). Dryopteris dilatata (Europe assessment). The IUCN Red List of Threatened Species, 2017. https://www.iucnredlist.org/species/201558/85425018