Carex extensa Gooden. ( Laîche étirée )


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Une fiche plus récente existe, vous pouvez la consulter ICI

Carex extensa Gooden. ( Laîche étirée  )

Carex extensa Gooden. ( Laîche étirée )

Nom : Carex extensa Gooden. ( Laîche étirée  )

Famille : CYPERACEAE

Floraison : Avril – Juillet

Protection :
– Liste des espèces végétales protégées en région Nord-Pas-de-Calais Article 1 (1991)

Description dans la flore de Coste :
Plante vivace de 20-60 cm, glabre, à souche gazonnante ; tige subtrigone, très lisse ; feuilles d’un vert pâle, raides, longues, étroites (1-2 mm), enroulées-canaliculées, rudes au sommet ; 1-2 épis mâles, en fuseau, fauves ; 2-4 épis femelles rapprochés, ovoïdes-oblongs (8-15 mm), denses, dressés, subsessiles, l’inférieur souvent écarté ; bractée inférieure engainante, toutes filiformes dépassant beaucoup la tige ; écailles fauves, ovales-mucronées ; utricules verdâtres, ascendants, elliptiques-trigones (3 1/2 mm), nervés, à bec court bidenté lisse, dépassant l’écaille.

Carex extensa Gooden. ( Laîche étirée  )

Carex extensa Gooden. ( Laîche étirée )

Présent dans le(s) département(s) suivant(s) :
Alpes-Maritimes, Bouches-du-Rhône, Calvados, Charente-Maritime, Corse-du-Sud, Côtes-d’Armor, Finistère, Gironde, Haute-Corse, Ille-et-Vilaine, Loire-Atlantique, Manche, Morbihan, Nord, Pas-de-Calais, Pyrénées-Atlantiques, Somme, Var, Vendée.

Répartition de Carex extensa Gooden. ( Laîche étirée  )

Répartition de Carex extensa Gooden. ( Laîche étirée )

Phytosociologie :

Alliance Ordre Classe
Glauco maritimae-Juncion maritimi Glauco maritimae-Puccinellietalia maritimae Asteretea tripolii
Irradiation atlantique en milieu saumâtre des Juncetalia maritimi. Prairies salées des côtes atlantiques européennes (cantabro- à boréoatlantiques), plus accessoirement des bassins salifères subatlantiques. Végétation des « prés salés » atlantiques à dominance d’hémicryptophytes et des pelouses aérohalines des falaises.
Alliance Ordre Classe
Molinio arundinaceae-Holoschoenion vulgaris Holoschoenetalia vulgaris Molinio caeruleae-Juncetea acutiflori
Communautés élevées mésohygrophiles méridionales. Communautés méditerranéennes. Prairies hygrophiles à mésohygrophiles, sur sol oligotrophe à mésotrophe.

Taxonomie :
Carex extensa Gooden. a pour synonymes (Informations issues de la BDTFX Version 2.0, Tela Botanica) :
– Carex balbisii Spreng.
– Carex extensa var. nana Husn.
– Carex extensa var. nervosa (Desf.) Barbey
– Carex extensa var. tenuifolia DC.
– Carex nervosa Desf.
– Trasus extensus (Gooden.) Gray

Ce contenu a été publié dans Fiche partielle de plantes, avec comme mot(s)-clé(s) . Vous pouvez le mettre en favoris avec ce permalien.

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