The author mentions the occurrence of a number of species mainly belonging to the flora of the ~Fluviatile” and the ~Haff district” in the dunes of the island of Voorne (prov. Zuid-Holland). These species are Sonchus palustris, Lathyrus palustris, Thalictrum flavum, Sedum sexangulare, Teucrium scordium, Cirsium dissectum, Dryopteris thelypteris, and Lactuca serriola.