Comparaison

Photos

Ranunculus fluitans

Critères

Critère	Renoncule des rivières Ranunculus fluitans
Période floraison ou sporulation	J F M A M J J A S O N D
Rareté	Extrêmement rare (RRR)
Hauteur mini-maxi	30 - 500 cm
Bord des limbes	Echancrures >20% du limbe Lobé ou découpé
Caractère particulier	Présence de stipules ou d'ochréas
Couleur dominante des pièces pétaloides	Blanche
Dimension de la fleur en mm	1 à 2 cm 20
Disposition des feuilles	Tige aérienne avec feuilles Alternes
Forme de la tige ou de la hampe florale	Tige cylindrique Lisse ou finement striée
Forme des feuilles indivises	Feuilles découpées ou composées
Fréquence	Extrêmement rare (RRR)
Habitat	Lac, étang, rivière
Hauteur maxi de la plante en cm	2 à 5 mètres 500
Hauteur mini de la plante en cm	30
Nombre d'étamines	>10
Nombre de pétales ou de tépales	5 6 Plus de 6 pétales
Port de la plante	Flottante ou submergée
Position de l'ovaire	Supère
Structure de la feuille	Feuille plus ou moins découpée Palmée et plus profondément découpée Feuille composée Composée palmée
Type biologique	Plante aquatique Submergée Plante terrestre Plante vivace en surface
Type d'inflorescence	Fleurs regroupées Grappe ou grappe composée
Type de fleur	Symétrie radiale Pétales ou tépales libres
Type de fruit	Sec indéhiscent Akène simple
Type de plante	Plante herbacée à fleurs Plante aquatique
Forme du réceptacle fructifère	Réceptacle plat ou simplement bombé
Types de nectaires	Glandes nectarifères à la base des pétales
Forme des feuilles divisées des plantes terrestres	Feuilles aquatiques ou non divisées
Forme du bec de l'akène	Absent ou peu développé
Forme du pédicelle floral	Cylindrique lisse
Orientation des sépales	Sépales dressés plaqués aux pétales
Ornementations des akènes	Faces bombées ornées de nervures transversales
Particularité de la biologie de la plante	Aquatique
Pilosité du pédicelle floral	Totalement glabre
Rigidité des feuilles submergées	Feuilles submergées souples
Type de feuille aquatique	Toutes immergées à segments filiformes

Carte des observations

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