Comparaison

Photos

Groenlandia densa
© GA
Critères
Critère
Potamot dense
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
Bord des limbes Echancrures < 20% du limbe
Entier à marge lisse ou scabre
Entier à marge ondulée
Caractère particulier Présence de stipules ou d'ochréas
Couleur dominante des pièces pétaloides Verdâtre
Brunâtre
Dimension de la fleur en mm Moins de 5 mm
4
Disposition des feuilles Tige aérienne avec feuilles
Opposées
Forme de la tige ou de la hampe florale Tige cylindrique
Lisse ou finement striée
Forme des feuilles indivises Rapport longueur / largeur 1-2
Ovale, oblongue ou obovale
Rapport longueur / largeur 2-5
Ovale lancéolée ou oblancéolée
Fréquence Extrêmement rare (RRR)
Habitat Lac, étang, rivière
Hauteur maxi de la plante en cm 31 à 60 cm
50
Hauteur mini de la plante en cm 10
Nombre d'étamines 4
Nombre de pétales ou de tépales 4
Port de la plante Flottante ou submergée
Position de l'ovaire Supère
Structure de la feuille Feuille non découpée
Simple, non découpée
Type biologique Plante aquatique
Submergée
Type d'inflorescence Fleurs regroupées
Epi ou épi composé
Tête globuleuse
Type de fleur Symétrie radiale
Pétales ou tépales libres
Type de fruit Charnu
À un seul noyau (drupe)
Sec indéhiscent
Akène simple
Type de plante Plante herbacée à fleurs
Plante aquatique
Structure des feuilles inférieures Opposées et sans stipule
Type de fruit 2 à 4 akènes à bec très court ou nul
Carte des observations
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