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)

Laîche de Haller
Carex halleriana

Critères (➡️)

Critère	Laîche de Haller Carex halleriana
Période floraison ou sporulation	J F M A M J J A S O N D
Rareté	Très rare (RR)
Hauteur mini-maxi de la plante	10 - 30 cm
Type de plante	À feuilles linéaires et longues gaines
Port de la plante	Tige dressée
Habitat	Prairie, pelouse Terrain sec
Type biologique	Plante vivace en surface
Disposition des feuilles	Alternes
Structure de la feuille	Simple, non découpée
Forme des feuilles indivises	Linéaire
Bord des limbes	Entier à marge lisse ou scabre
Type de fleur	Autre (Voir aide)
Dimension de la fleur en mm	Pièces florales absentes ou transformées en soies
Position de l'ovaire	Supère
Couleur dominante des pièces pétaloides	Pas de calice ni de corolle
Nombre de pétales ou de tépales	Aucun pétale
Type d'inflorescence	Epi ou épi composé
Nombre d'étamines	3
Type de fruit	Utricule (Cypéracées)
Forme de la tige ou de la hampe florale	Trigone
Disposition des feuilles sur les rejets	Feuilles disposées sur 3 rangs
Particularité des fleurs	Plante monoïque
Aspect de la semence	Akène enfermé dans une boîte (utricule)
Détail de l'inflorescence	Terminale en grappe d'épis
Périgone et semence	Absent ou à soies très courtes < 0,5 mm
Ecailles des épis (Bractées florales)	à 2 stériles à la base
Nombre de stigmates	3
Biologie de la plante	Cespiteuse formant une touffe bien délimitée
Pilosité de la plante	Glabre
Type d'inflorescence	Un seul épi terminal entièrement mâle
Longueur de l'inflorescence	8 à 20 cm
Couleur des feuilles	Au moins la face supérieure bien verte
Densité des fleurs femelles sur les épis	Epis denses depuis leur base
Aspect de la première feuille bractéale	Taille > à l'épi, < à l'inflorescence
Largeur des feuilles	2 à 3 mm
Ligule et anti-ligule	Ligule inférieure à 1 mm
Longueur des épis inférieurs	Inférieure à 1 cm 1 à 1,5 cm
Taille de l'utricule	4 à 5 mm
Bec de l'utricule	Entre 0,3 et 0,5 mm
Pilosité du dos des utricules	Nettement pubescent
Nervation de l'utricule à maturité	Nervation nette
Marges de l'utricule	Velues ou papilleuses comme le dos
Position des utricules par rapport à l'axe	Dressée
Couleurs des écailles en début de fructification	Brunes ou roussâtres à bord membraneux étroit
Forme des écailles	Ovale aristée ou acuminée
Longueur des pédoncules inférieurs	Supérieur à 4 cm
Distance entre les deux épis inférieurs	Supérieur à 12 cm 8 à 12 cm Moins de 1,5 cm

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.
Copyright © : Geonat'ÎdF - Lobelia

Comparaison

Photos (clic pour agrandir)

Laîche de Haller Carex halleriana

Critères (➡️)

Carte des observations

Laîche de Haller
Carex halleriana