Cyperus papyrus
The gardens are set above the Dordogne River, and contain 16 lotus species (Nelumbo and Nymphaea), and other aquatic plants including Caltha, Glyceria, Pontederia, and Sagittaria, as well as waterside plants including "Cyperus papyrus", "Gunnera manicata", Hosta, Iris, and Lobelia.