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Sélection

Erigeron bonariensis

Vergerette de Buenos Aires

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Photos épinglées

Erigeron bonariensis
Individu
5
Critères
Critère Erigeron bonariensis
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Extrêmement rare (RRR)
Hauteur mini-maxi 20 - 70 cm
Habitat
Terrain vague, chemin
Nombre d'étamines
5
Disposition des capitules
Capitule solitaire
Position des épines
Plante ne possédant pas d'épine
Fleurs en languettes du capitule
Absence de fleurs en languettes
Couleur du capitule
À une seule couleur
Présence d'écailles sur le capitule
Réceptacle nu ou pubescent entre les fleurs
Présence de lait dans la plante
Absence de lait
Pilosité des faces des feuilles
Pubescence abondante et homogène sur les 2 faces
Forme de l'inflorescence
Panicules latérales dépassant la centrale courte
Détail du fruit
Corps de l'akène velu de moins de 2 mm
Polymorphisme des fleurs du capitule
Fleurs filiformes entre tubulées et ligulées
Type de plante
Plante herbacée à fleurs
  • Autre plante herbacée à fleur
Type biologique
Plante terrestre
  • Plante annuelle
Disposition des feuilles
Tige aérienne avec feuilles
  • Alternes
Forme des feuilles indivises
Rapport longueur / largeur 5-10
  • Linéaire lancéolée
Rapport longueur / largeur > 10
  • Linéaire
Bord des limbes
Echancrures < 20% du limbe
  • Entier à marge ondulée
  • Denté
Type d'inflorescence
Fleurs regroupées
  • Capitule
Forme de la tige ou de la hampe florale
Tige cylindrique
  • Nettement sillonnée
Composition du capitule
Fleurs en tube uniquement
  • Le tube se termine par 5 dents courtes
Couleur dominante des pièces pétaloides
Jaune
Port de la plante
Tige dressée
Position de l'ovaire
Infère
Nombre de pétales ou de tépales
Capitule
Type d'akène
Pappus formé d'une aigrette sessile
Structure de la feuille
Feuille non découpée
  • Simple, non découpée
Type de fleur
Symétrie radiale
  • Pétales ou tépales soudés
Symétrie bilatérale
  • Pétales ou tépales soudés
Autre
  • Autre (Voir aide)
Dimension de la fleur en mm
Moins de 5 mm
  • 4
Type de fruit
Sec indéhiscent
  • Akène avec appendices plumeux
Phénologie
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Carte des observations
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