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Juncus squarrosus

Jonc rude

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Juncus squarrosus
Individu
6
Critères
Critère Juncus squarrosus
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Extrêmement rare (RRR)
Hauteur mini-maxi 30 - 60 cm
Nombre de pétales ou de tépales
6
Habitat
Prairie, pelouse
Zone humide, tourbière, rives
Nombre d'étamines
6
Caractéristique de la fleur
Formée de 6 tépales scarieux (rigides) brunâtres
Pilosité des feuilles
Glabres
Nombre de graines par fruit
Nombreuses graines minuscules
Type de feuilles sur les tiges fleuries
Feuilles à limbe plan < 2,5 mm de large
Forme des tépales
Tous obtus
Sommet de la capsule
Rétréci et mucroné
Arrondi
Type d'inflorescence
Panicule de fleurs souvent isolées
Nombre de bractéoles à la base de la fleur
Involucre de 2 à 3 bractéoles
Port de la plante
Tige ou hampe droite à inflorescence fasciculée
Type de feuilles
Canaliculées et non cloisonnées en rosette
Type de plante
Plante herbacée à fleurs
  • À feuilles linéaires et longues gaines
Type biologique
Plante terrestre
  • Plante vivace en surface
Disposition des feuilles
Tige aérienne avec feuilles
  • Alternes
Forme des feuilles indivises
Rapport longueur / largeur > 10
  • Linéaire
Bord des limbes
Echancrures < 20% du limbe
  • Entier à marge lisse ou scabre
Type d'inflorescence
Fleurs regroupées
  • Grappe ou grappe composée
  • Cyme ou cyme composée
Forme de la tige ou de la hampe florale
Tige cylindrique
  • Lisse ou finement striée
Aspect des hampes (ressemblant à des tiges)
Tige feuillée
  • Feuilles bien développées avec gaine et limbe
Hampe dépourvue de feuilles
  • Verte, moelle continue, très lisse et luisante
Couleur dominante des pièces pétaloides
Verdâtre
Brunâtre
Port de la plante
Tige dressée
Position de l'ovaire
Supère
Structure de la feuille
Feuille non découpée
  • Simple, non découpée
Type de fleur
Symétrie radiale
  • Pétales ou tépales libres
Dimension de la fleur en mm
1 à 2 cm
  • 10
Type de fruit
Sec déhiscent
  • À autre mode d'ouverture (capsule)
Phénologie
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Carte des observations
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