Comparaison

Comparer plusieurs plantes en visualisant leurs photos, leurs critères distinctifs ou communs, et leur répartition géographique selon les connaissances actuelles.

Photos (clic pour agrandir)

Vergerette acre
Erigeron acris

Critères (➡️)

Critère	Vergerette acre Erigeron acris
Période floraison ou sporulation	J F M A M J J A S O N D
Rareté	Assez rare (AR)
Hauteur mini-maxi de la plante	15 - 60 cm
Type de plante	Autre plante herbacée à fleur
Port de la plante	Tige dressée
Habitat	Terrain vague, chemin Terrain sec
Type biologique	Plante annuelle Plante vivace en surface
Disposition des feuilles	Alternes
Structure de la feuille	Simple, non découpée Pennée et plus profondément découpée
Forme des feuilles indivises	Lancéolée Feuilles découpées ou composées
Bord des limbes	Entier à marge lisse ou scabre
Type de fleur	Pétales ou tépales soudés Autre (Voir aide)
Dimension de la fleur en mm	12
Position de l'ovaire	Infère
Couleur dominante des pièces pétaloides	Rose, lilas Rouge, pourpre Jaunâtre
Nombre de pétales ou de tépales	Capitule
Type d'inflorescence	Capitule
Nombre d'étamines	5
Type de fruit	Akène avec appendices plumeux
Forme de la tige ou de la hampe florale	+ de 4 angles Lisse ou finement striée
Composition du capitule	Les tubulées à 5 dents, les ligulées à 2 - 3 dents
Couleur du capitule	Bicolore jaune au centre, bleu violacé autour
Disposition des capitules	Capitule solitaire 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
Type d'akène	Pappus formé d'une aigrette sessile
Présence de lait dans la plante	Absence de lait
Pilosité des faces des feuilles	Poils courts espacés et appliqués sur les 2 faces Pubescence abondante et homogène sur les 2 faces
Fleurs en languettes du capitule	Languettes roses dressées de 2 à 5 mm
Forme de l'inflorescence	Ramifiée à capitules très espacés En corymbe
Détail du fruit	Corps de l'akène velu de moins de 2 mm
Polymorphisme des fleurs du capitule	Fleurs filiformes entre tubulées et ligulées

Carte des observations

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Avertissement : La carte présentée ne correspond qu'à l'état actuel des connaissances et ne peut être considérée comme exhaustive. Cette carte est une retranscription en temps réel des contributions de chacun sur la base de données et toute nouvelle donnée est à ce titre intéressante, même pour les espèces les plus communes.
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Vergerette acre Erigeron acris

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Vergerette acre
Erigeron acris