Comparaison

Photos

Carex montana
© GA
Critères
Critère
Laîche des montagnes
Carex montana
Période floraison ou sporulation
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  • F
  • M
  • A
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  • J
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  • A
  • S
  • O
  • N
  • D
Rareté Extrêmement rare (RRR)
Hauteur mini-maxi 10 - 30 cm
Bord des limbes Echancrures < 20% du limbe
Entier à marge lisse ou scabre
Couleur dominante des pièces pétaloides Pas de calice ni de corolle
Dimension de la fleur en mm Plante à fleurs nues
Pièces florales absentes ou transformées en soies
Disposition des feuilles Tige aérienne avec feuilles
Alternes
Forme de la tige ou de la hampe florale Tige anguleuse
Trigone
Forme des feuilles indivises Rapport longueur / largeur > 10
Linéaire
Fréquence Extrêmement rare (RRR)
Habitat Forêt, haie, lisière, chemin forestier (laie)
Prairie, pelouse
Hauteur maxi de la plante en cm 11 à 30 cm
30
Hauteur mini de la plante en cm 10
Nombre d'étamines 3
Nombre de pétales ou de tépales Aucun pétale
Port de la plante Tige dressée
Position de l'ovaire Supère
Structure de la feuille Feuille non découpée
Simple, non découpée
Type biologique Plante terrestre
Plante vivace en surface
Type d'inflorescence Fleurs regroupées
Epi ou épi composé
Type de fleur Autre
Autre (Voir aide)
Type de fruit Sec indéhiscent
Utricule (Cypéracées)
Type de plante Plante herbacée à fleurs
À feuilles linéaires et longues gaines
Aspect de la semence Akène enfermé dans une boîte (utricule)
Disposition des feuilles sur les rejets Feuilles disposées sur 3 rangs
Détail de l'inflorescence Terminale en grappe d'épis
Terminale en épi d'épis
Ecailles des épis (Bractées florales) Disposition en hélice
à 2 stériles à la base
Nombre de stigmates 3
Particularité des fleurs Plante monoïque
Périgone et semence Absent ou à soies très courtes < 0,5 mm
Aspect de la première feuille bractéale Non engainante et écailleuse ou filiforme
Taille inférieure à l'épi
Bec de l'utricule Inférieur à 0,5 mm
Entre 0,3 et 0,5 mm
Biologie de la plante Cespiteuse formant une touffe bien délimitée
Couleur des feuilles Au moins la face supérieure bien verte
Couleurs des écailles en début de fructification Brunes ou roussâtres à bord membraneux étroit
Noires ou brun noir
Densité des fleurs femelles sur les épis Epis denses depuis leur base
Distance entre les deux épis inférieurs Moins de 1,5 cm
Forme des écailles Ovale aigue ou mucronée
Largeur des feuilles 1 à 2 mm
Ligule et anti-ligule Absence d'anti-ligule, hauteur de la "ligule"
Ligule inférieure à 1 mm
Longueur de l'inflorescence Inférieure à 3 cm
Longueur des pédoncules inférieurs Épis inférieurs sessiles
Moins de 1 cm
Longueur des épis inférieurs Inférieure à 1 cm
Marges de l'utricule Velues ou papilleuses comme le dos
Nervation de l'utricule à maturité Nervation nette
Pilosité de la plante Velue
Pilosité du dos des utricules Nettement pubescent
Position des utricules par rapport à l'axe Dressée
Taille de l'utricule 4 à 5 mm
3 à 4 mm
Type d'inflorescence Grappe d'épis bien différenciés (hétérostachyés)
Un seul épi terminal entièrement mâle
Carte des observations
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