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
Couleur dominante des pièces pétaloides	Jaune
Nombre de pétales ou de tépales	Capitule
Port de la plante	Tige dressée
Habitat	Terrain vague, chemin Zone humide, tourbière, rives
Nombre d'étamines	5
Position de l'ovaire	Infère
Disposition des capitules	Autres disposition des capitules
Position des épines	Plante ne possédant pas d'épine
Couleur du capitule	À une seule couleur
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
Découpure des feuilles	Simplement dentées
Détail du fruit	Surmonté de 2 à 4 pointes raides et accrochantes
Dimension et forme du capitule	Large et plat à plus de 100 fleurs
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
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 Opposées
Structure de la feuille	Feuille non découpée Simple, non découpée
Forme des feuilles indivises	Rapport longueur / largeur 2-5 Lancéolée
Bord des limbes	Echancrures < 20% du limbe Denté
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	1 à 2 cm 20
Type d'inflorescence	Fleurs regroupées Capitule
Type de fruit	Sec indéhiscent Akène simple
Forme de la tige ou de la hampe florale	Tige cylindrique Lisse ou finement striée
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

Carte des observations

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