Comparaison

Photos

Juncus squarrosus
© GA
Critères
Critère
Jonc rude
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
Type d'inflorescence
Fleurs regroupées
  • Grappe ou grappe composée
  • Cyme ou cyme composée
Couleur dominante des pièces pétaloides
Brunâtre
Verdâtre
Habitat
Zone humide, tourbière, rives
Prairie, pelouse
Nombre de pétales ou de tépales
6
Nombre d'étamines
6
Port de la plante
Tige dressée
Position de l'ovaire
Supère
Caractéristique de la fleur
Formée de 6 tépales scarieux (rigides) brunâtres
Nombre de graines par fruit
Nombreuses graines minuscules
Pilosité des feuilles
Glabres
Type de feuilles sur les tiges fleuries
Feuilles à limbe plan < 2,5 mm de large
Forme des tépales
Tous obtus
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
Sommet de la capsule
Arrondi
Rétréci et mucroné
Type d'inflorescence
Panicule de fleurs souvent isolées
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
Structure de la feuille
Feuille non découpée
  • Simple, non découpée
Forme des feuilles indivises
Rapport longueur / largeur > 10
  • Linéaire
Bord des limbes
Echancrures < 20% du limbe
  • Entier à marge lisse ou scabre
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)
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
Carte des observations
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