Dryopteris expansa

Dryopteris expansa
Description de cette image, également commentée ci-après
Dryopteris expansa près de Králický Sněžník en République tchèque
Classification
Règne Plantae
Sous-règne Tracheobionta
Division Pteridophyta
Classe Filicopsida
Ordre Polypodiales
Famille Dryopteridaceae
Genre Dryopteris

Espèce

Dryopteris expansa
(C.Presl) Fraser-Jenk. & Jermy, 1977[1]

Dryopteris expansa, de noms communs Dryoptère dressée, Dryoptéris étalé ou Dryoptéris élargi[2], est une espèce de fougères du genre Dryopteris appartenant à la famille des Dryopteridaceae que l'on trouve en Eurasie (sauf dans ses zones méridionales[3]), jusqu'à l'Altaï, au Groenland et en Amérique du Nord.

Synonymes

Description

Cette espèce diploïde mesure en moyenne 30 cm de largeur sur 90 cm de hauteur. Elle est caractérisée par ses frondes dressées[5],[6].

Habitat

Dryopteris expansa croît dans les sous-bois humides et sur les pentes montagneuses rocheuses, entre 50 mètres et 1 500 mètres d'altitude.

Notes et références

  1. ↑ Brit. Fern Gaz. 11: 338. 1977
  2. ↑ « Dryopteris expansa (C.Presl) Fraser-Jenk. & Jermy », sur Inventaire national du patrimoine naturel (consulté le )
  3. ↑ Mais on peut la trouver dans les hautes montagnes de Corse, du Portugal et de Grèce
  4. ↑ Reliq. Haenk. 1: 38. 1825
  5. ↑ (en) « Dryopteris expansa in Flora of North America @ efloras.org », sur www.efloras.org (consulté le )
  6. ↑ (en) « Dryopteris expansa (C.Presl) Fraser-Jenk. & Jermy », sur Flora Europaea (consulté le )

Liens externes

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