Comparaison

Photos

Erigeron bonariensis

Critères

Critère	Vergerette de Buenos Aires 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
Bord des limbes	Echancrures < 20% du limbe Denté Entier à marge ondulée
Couleur dominante des pièces pétaloides	Jaune
Dimension de la fleur en mm	Moins de 5 mm 4
Disposition des feuilles	Tige aérienne avec feuilles Alternes
Forme de la tige ou de la hampe florale	Tige cylindrique Nettement sillonnée
Forme des feuilles indivises	Rapport longueur / largeur 5-10 Linéaire lancéolée Rapport longueur / largeur > 10 Linéaire
Fréquence	Extrêmement rare (RRR)
Habitat	Terrain vague, chemin
Hauteur maxi de la plante en cm	61 cm à 1 mètre 70
Hauteur mini de la plante en cm	20
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 annuelle
Type d'inflorescence	Fleurs regroupées Capitule
Type de fleur	Symétrie radiale Pétales ou tépales soudés Symétrie bilatérale Autre Autre (Voir aide)
Type de fruit	Sec indéhiscent Akène avec appendices plumeux
Type de plante	Plante herbacée à fleurs Autre plante herbacée à fleur
Composition du capitule	Fleurs en tube uniquement Le tube se termine par 5 dents courtes
Couleur du capitule	À une seule couleur
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
Détail du fruit	Corps de l'akène velu de moins de 2 mm
Fleurs en languettes du capitule	Absence de fleurs en languettes
Forme de l'inflorescence	Panicules latérales dépassant la centrale courte
Pilosité des faces des feuilles	Pubescence abondante et homogène sur les 2 faces
Polymorphisme des fleurs du capitule	Fleurs filiformes entre tubulées et ligulées

Carte des observations

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