Comparaison

Photos

Potamogeton pusillus

Pas de photo pour cette espèce © A

Critères

Critère	Potamot fluet Potamogeton pusillus
Période floraison ou sporulation	J F M A M J J A S O N D
Rareté	Extrêmement rare (RRR)
Hauteur mini-maxi	20 - 90 cm
Type de fruit	Charnu À un seul noyau (drupe) Sec indéhiscent Akène simple
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	Toutes allongées, sessiles et submergées
Nervation des feuilles	1 à 3 nervures parallèles
Opacité des feuilles	Des submergées translucides et sessiles
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 soudée en tube à sa base
Taille de l'akène	< 2,4 mm
Type de plante	Plante herbacée à fleurs Plante aquatique
Type biologique	Plante aquatique Submergée
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 > 10 Linéaire
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 3
Type d'inflorescence	Fleurs regroupées Epi ou épi composé
Forme de la tige ou de la hampe florale	Tige cylindrique Lisse ou finement striée

Carte des observations

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