Comparaison

Photos

Potamogeton coloratus
© JG†
Critères
Critère
Potamot des tourbières alcalines
Potamogeton coloratus
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Extrêmement rare (RRR)
Hauteur mini-maxi 20 - 60 cm
Caractère particulier
Présence de stipules ou d'ochréas
Couleur dominante des pièces pétaloides
Verdâtre
Brunâtre
Habitat
Lac, étang, rivière
Nombre de pétales ou de tépales
4
Nombre d'étamines
4
Port de la plante
Flottante ou submergée
Position de l'ovaire
Supère
Structure des feuilles inférieures
Alternes, sans gaines avec une stipule
Type de fruit
2 à 4 akènes à bec très court ou nul
Dimorphisme des feuilles
Les inférieures lancéolées, les supérieures larges
Nervation des feuilles
Plus de 13 nervures parallèles
Opacité des feuilles
Des submergées translucides et pétiolées
Particularité de l'akène
Akène sans bosse ventrale
Pédoncule de l'inflorescence
Long, supérieur à 2,5 cm et peu renflé
Soudure de la stipule
Stipule ouverte
Taille de l'akène
< 2,4 mm
Type de plante
Plante herbacée à fleurs
  • Plante aquatique
Type biologique
Plante aquatique
  • Submergée
  • Flottante
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 1-2
  • Ovale, oblongue ou obovale
Bord des limbes
Echancrures < 20% du limbe
  • Entier à marge lisse ou scabre
Type de fleur
Symétrie radiale
  • Pétales ou tépales libres
Dimension de la fleur en mm
Moins de 5 mm
  • 2
Type d'inflorescence
Fleurs regroupées
  • Epi ou épi composé
Type de fruit
Charnu
  • À un seul noyau (drupe)
Sec indéhiscent
  • Akène simple
Forme de la tige ou de la hampe florale
Tige cylindrique
  • Lisse ou finement striée
Carte des observations
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