Comparaison

Sélection

Groenlandia densa

Potamot dense

Photos

Photos épinglées

Groenlandia densa
Individu
Critères
Critère Groenlandia densa
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Extrêmement rare (RRR)
Hauteur mini-maxi 10 - 50 cm
Nombre de pétales ou de tépales
4
Nombre d'étamines
4
Habitat
Lac, étang, rivière
Structure des feuilles inférieures
Opposées et sans stipule
Type de fruit
2 à 4 akènes à bec très court ou nul
Type de plante
Plante herbacée à fleurs
  • Plante aquatique
Type biologique
Plante aquatique
  • Submergée
Disposition des feuilles
Tige aérienne avec feuilles
  • Opposées
Forme des feuilles indivises
Rapport longueur / largeur 1-2
  • Ovale, oblongue ou obovale
Rapport longueur / largeur 2-5
  • Ovale lancéolée ou oblancéolée
Bord des limbes
Echancrures < 20% du limbe
  • Entier à marge lisse ou scabre
  • Entier à marge ondulée
Type d'inflorescence
Fleurs regroupées
  • Epi ou épi composé
  • Tête globuleuse
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
Couleur dominante des pièces pétaloides
Verdâtre
Brunâtre
Position de l'ovaire
Supère
Port de la plante
Flottante ou submergée
Caractère particulier
Présence de stipules ou d'ochréas
Structure de la feuille
Feuille non découpée
  • Simple, non découpée
Type de fleur
Symétrie radiale
  • Pétales ou tépales libres
Dimension de la fleur en mm
Moins de 5 mm
  • 4
Phénologie
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Carte des observations
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