Comparaison

Photos

Laphangium luteoalbum

Critères

Critère	Gnaphale blanc-jaunâtre Laphangium luteoalbum
Période floraison ou sporulation	J F M A M J J A S O N D
Rareté	Extrêmement rare (RRR)
Hauteur mini-maxi	5 - 40 cm
Aigrettes du fruit	Sur tous les fruits, à soies libres
Couleur de l'arête des bractées	Absence d'arête
Couleur du sommet des bractées de l'involucre	Très membraneux jaunâtre et luisant
Forme du capitule	Capitule à angles peu marqués
Forme et pilosité des feuilles	Feuilles entières couvertes de poils laineux
Nombre de fleurs hermaphrodites	4 à 8
Nombre de pétales sur les fleurs centrales	5 pétales
Organisation des semences dans le capitule	Toutes libres
Séparation des sexes dans le capitule	Capitule hermaphrodite
Sommet des bractées médianes	Bractées obtuses au sommet
Couleur dominante des pièces pétaloides	Jaunâtre
Habitat	Zone humide, tourbière, rives Lac, étang, rivière
Nombre de pétales ou de tépales	Capitule
Nombre d'étamines	5
Port de la plante	Tige dressée
Position de l'ovaire	Infère
Couleur du capitule	À une seule couleur
Disposition des capitules	Corymbe de 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 aigrette sessile
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 Alternes
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 Entier à marge ondulée
Type de fleur	Symétrie radiale Pétales ou tépales soudés
Dimension de la fleur en mm	Moins de 1 cm 5
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

Carte des observations

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