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
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
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
Structure de la feuille
Feuille non découpée
  • Simple, non découpée
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 de fleur
Symétrie radiale
  • Pétales ou tépales libres
Dimension de la fleur en mm
Moins de 5 mm
  • 4
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
Carte des observations
[{"cd_nom": 100584, "first_year": 2008.0, "geojson_maille": {"coordinates": [[[[1.88478738266665, 48.7449046037264], [1.8851713836607, 48.726918065671], [1.85798418822842, 48.7266610080794], [1.85759082522904, 48.7446474615862], [1.88478738266665, 48.7449046037264]]]], "type": "MultiPolygon"}, "last_year": 2008.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 1996.0, "geojson_maille": {"coordinates": [[[[2.02111119703121, 48.7281104570455], [2.02144815191122, 48.7101232476563], [1.99426905607981, 48.7098972302036], [1.9939227443387, 48.7278843652552], [2.02111119703121, 48.7281104570455]]]], "type": "MultiPolygon"}, "last_year": 1996.0, "observation_number": 2, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 1995.0, "geojson_maille": {"coordinates": [[[[2.10267792206604, 48.7287515717249], [2.10298680495173, 48.7107641515392], [2.07580703278472, 48.7105567083977], [2.07548879233908, 48.7285440603539], [2.10267792206604, 48.7287515717249]]]], "type": "MultiPolygon"}, "last_year": 1995.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 2019.0, "geojson_maille": {"coordinates": [[[[2.10942457757038, 48.332967110057], [2.10972883413279, 48.3149740138969], [2.08275331114494, 48.314768065309], [2.08243983713904, 48.3327610938028], [2.10942457757038, 48.332967110057]]]], "type": "MultiPolygon"}, "last_year": 2019.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 2020.0, "geojson_maille": {"coordinates": [[[[2.10972883413279, 48.3149740138969], [2.11003288288233, 48.2969806807518], [2.08306657104395, 48.2967747998049], [2.08275331114494, 48.314768065309], [2.10972883413279, 48.3149740138969]]]], "type": "MultiPolygon"}, "last_year": 2020.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 2024.0, "geojson_maille": {"coordinates": [[[[2.27033967363822, 48.406045510366], [2.27058930320847, 48.3880530162522], [2.24357571542371, 48.3878837281829], [2.24331684198093, 48.4058761666638], [2.27033967363822, 48.406045510366]]]], "type": "MultiPolygon"}, "last_year": 2024.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 2023.0, "geojson_maille": {"coordinates": [[[[2.73085418409089, 48.1920489625764], [2.73094589159389, 48.1740530256466], [2.70404072128178, 48.1739886403366], [2.70393984327452, 48.1919845561184], [2.73085418409089, 48.1920489625764]]]], "type": "MultiPolygon"}, "last_year": 2023.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 2020.0, "geojson_maille": {"coordinates": [[[[2.78402049274497, 48.3541128408769], [2.78409431118294, 48.3361189478737], [2.75710626086742, 48.3360666720112], [2.75702321528967, 48.3540605478367], [2.78402049274497, 48.3541128408769]]]], "type": "MultiPolygon"}, "last_year": 2022.0, "observation_number": 3, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 2022.0, "geojson_maille": {"coordinates": [[[[2.81101782069463, 48.3541589818362], [2.81108241194107, 48.3361650736761], [2.78409431118294, 48.3361189478737], [2.78402049274497, 48.3541128408769], [2.81101782069463, 48.3541589818362]]]], "type": "MultiPolygon"}, "last_year": 2022.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 2016.0, "geojson_maille": {"coordinates": [[[[3.21634935789823, 48.4440786657311], [3.21627528646937, 48.4260859921993], [3.18924098657235, 48.4261321938429], [3.1893057991866, 48.44412488256], [3.21634935789823, 48.4440786657311]]]], "type": "MultiPolygon"}, "last_year": 2016.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}, {"cd_nom": 100584, "first_year": 2019.0, "geojson_maille": {"coordinates": [[[[3.40816872381867, 48.7674033719627], [3.40802811454157, 48.7494156311587], [3.38082667711503, 48.7495054836986], [3.38095791289214, 48.7674932540606], [3.40816872381867, 48.7674033719627]]]], "type": "MultiPolygon"}, "last_year": 2019.0, "observation_number": 1, "scientific_name": "Groenlandia densa"}]