Comparaison

Photos

Symphyotrichum salignum
© GA
Critères
Critère
Aster à feuilles de Saule
Symphyotrichum salignum
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Très rare (RR)
Hauteur mini-maxi 60 - 160 cm
Bord des limbes Echancrures < 20% du limbe
Denté
Couleur dominante des pièces pétaloides Blanche
Rose, lilas
Dimension de la fleur en mm 1 à 2 cm
15
Disposition des feuilles Tige aérienne avec feuilles
Alternes
Forme de la tige ou de la hampe florale Tige cylindrique
Lisse ou finement striée
Forme des feuilles indivises Rapport longueur / largeur 2-5
Lancéolée
Fréquence Très rare (RR)
Habitat Mégaphorbiaie
Hauteur maxi de la plante en cm 1 à 2 mètres
160
Hauteur mini de la plante en cm 60
Nombre d'étamines 5
Nombre de pétales ou de tépales Capitule
Port de la plante Tige dressée
Position de l'ovaire Infère
Structure de la feuille Feuille non découpée
Simple, non découpée
Type biologique Plante terrestre
Plante vivace en surface
Plante vivace souterraine
Type d'inflorescence Fleurs regroupées
Capitule
Type de fleur Autre
Autre (Voir aide)
Type de fruit Sec indéhiscent
Akène simple
Type de plante Plante herbacée à fleurs
Autre plante herbacée à fleur
Composition du capitule Fleurs en tube au centre et en languette autour
Les tubulées à 5 dents, les ligulées à 2 - 3 dents
Couleur du capitule Bicolore jaune au centre, blanc autour
Bicolore jaune au centre, bleu violacé autour
Disposition des capitules Capitule solitaire
Position des épines Plante ne possédant pas d'épine
Présence d'écailles sur le capitule Réceptacle nu ou pubescent entre les fleurs
Présence de lait dans la plante Absence de lait
Type d'akène Pappus formé d'une aigrette sessile
Bractées externes de l'involucre Atteignant la moitié de l'involucre et > 0,7 mm
Fleurs ligulées > 1,5 mm de large, lilas pâle ou soutenu
Inflorescence Nombreux capitules à ligules blanches à mauves
Pilosité de la plante Parties végétatives presques glabres
Carte des observations
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