The Nasturtium ×sterile (airy shaw) Oefelein 1958 in Poland – future useful horticultural plant?

This study presents the taxonomic, cytometric and phytosociological characteristics of Nasturtium ×sterile as well as four areas of its occurrence in Poland. One of these areas was probably mistakenly identified near Cracow in 1916, but the other three still exist and are located in the geographical region of Wielkopolska (18 localities). Fruit-bearing specimens were found in two localities (Kłębowo and Biała). In the other localities only barren specimens were found, which were identified using flow cytometry. Further research on N. ×sterile is necessary to verify whether it has similar functional and therapeutic properties as one of its parent species.