Comparaison

Photos

Cirsium dissectum

Critères

Critère	Cirse des prairies Cirsium dissectum
Période floraison ou sporulation	J F M A M J J A S O N D
Rareté	Très rare (RR)
Hauteur mini-maxi	30 - 70 cm
Nombre de pétales ou de tépales	Capitule
Port de la plante	Tige dressée
Caractère particulier	Tige ou feuilles munies d'épines
Habitat	Zone humide, tourbière, rives Terrain vague, chemin
Nombre d'étamines	5
Position de l'ovaire	Infère
Couleur dominante des pièces pétaloides	Rouge, pourpre
Disposition des capitules	Capitule solitaire Autres disposition des capitules
Position des épines	Sur les feuilles et éventuellement le capitule
Couleur du capitule	À une seule couleur
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 du réceptacle, entre les fleurs	Réceptacle portant de longues soies
Forme des bractées de l'involucre	Appliquées ou peu étalées à pointe courte
Forme du pappus surmontant l'akène	Soies simples soudées en anneau à leur base
Particularité du corps de l'akène	Lisse non poisseux
Pilosité des faces des feuilles	Dessus vert non épineux, dessous aranéux
Forme et taille du capitule	Ovoïde de 1,5 à 3 cm de diamètre
Nombre et organisation des capitules	En général seul
Type de plante	Plante herbacée à fleurs Autre plante herbacée à fleur
Type biologique	Plante terrestre Plante vivace en surface
Disposition des feuilles	Tige aérienne avec feuilles Alternes
Structure de la feuille	Feuille non découpée Simple, non découpée Feuille plus ou moins découpée Pennée et lobée
Forme des feuilles indivises	Feuilles découpées ou composées Feuilles découpées ou composées Rapport longueur / largeur 2-5 Lancéolée
Bord des limbes	Echancrures < 20% du limbe Denté
Type de fleur	Symétrie radiale Pétales ou tépales soudés Autre Autre (Voir aide)
Dimension de la fleur en mm	2 à 5 cm 30
Type d'inflorescence	Fleurs regroupées Capitule
Type de fruit	Sec indéhiscent Akène avec appendices plumeux
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 Le tube se termine par 5 pétales allongés

Carte des observations

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