Comparaison

Photos

Bidens cernua

Critères

Critère	Bident penché Bidens cernua
Période floraison ou sporulation	J F M A M J J A S O N D
Rareté	Très rare (RR)
Hauteur mini-maxi	20 - 80 cm
Bord des limbes	Echancrures < 20% du limbe Denté
Couleur dominante des pièces pétaloides	Jaune
Dimension de la fleur en mm	1 à 2 cm 20
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	Rapport longueur / largeur 2-5 Lancéolée
Fréquence	Très rare (RR)
Habitat	Terrain vague, chemin Zone humide, tourbière, rives
Hauteur maxi de la plante en cm	61 cm à 1 mètre 80
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 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 Fleurs en tube au centre et en languette autour Les tubulées à 5 dents, les ligulées à 2 - 3 dents
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	Fleur placée à l'aisselle d'une écaille
Présence de lait dans la plante	Absence de lait
Type d'akène	Pappus formé de 2 à 4 arêtes
Bractées périphériques	Réfléchies à maturité
Dimension et forme du capitule	Large et plat à plus de 100 fleurs
Découpure des feuilles	Simplement dentées
Détail du fruit	Surmonté de 2 à 4 pointes raides et accrochantes
Forme des akènes	À section losangique surmontés par 4 pointes
Ornementation du corps de l'akène	Glabre et lisse et marges à poils vers le bas

Carte des observations

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