Comparaison

Photos

Ambrosia artemisiifolia
© GA
Critères
Critère
Ambroise élevée
Ambrosia artemisiifolia
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Très rare (RR)
Hauteur mini-maxi 30 - 100 cm
Bord des limbes Echancrures >20% du limbe
Lobé ou découpé
Couleur dominante des pièces pétaloides Jaunâtre
Verdâtre
Dimension de la fleur en mm Plante à fleurs nues
Pièces florales absentes ou transformées en soies
Moins de 5 mm
3
Moins de 1 cm
5
Disposition des feuilles Tige aérienne avec feuilles
Opposées
Forme de la tige ou de la hampe florale Tige cylindrique
Lisse ou finement striée
Forme des feuilles indivises Feuilles découpées ou composées
Fréquence Très rare (RR)
Habitat Prairie, pelouse
Terrain vague, chemin
Hauteur maxi de la plante en cm 61 cm à 1 mètre
100
Hauteur mini de la plante en cm 30
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 plus ou moins découpée
Pennée et plus profondément découpée
Type biologique Plante terrestre
Plante annuelle
Type d'inflorescence Fleurs regroupées
Capitule
Type de fleur Symétrie radiale
Pétales ou tépales soudés
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 uniquement
Le tube se termine par 5 dents courtes
Couleur du capitule À une seule couleur
Disposition des capitules Autres disposition des capitules
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 couronne écailleuse
Division des feuilles inférieures Deux fois divisée à bande médiane étroite
Fleurs femelles Semences isolées enfermant une seule fleur nue
Inflorescences mâles Plante terminée par une grappe de capitules mâles
Carte des observations
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