A new locality Veronica triloba (Opiz) Kern was found in the Nida Basin (southern Poland) in 2007. The locality is situated near Kalina village (ATPOL grid square: EF 31). The plant occurs there as a weed in arable field and in the baulks between fields neighbouring dry grasslands protected as Special Area of Conservation (SACs) called Kalina-Lisiniec established under NATURA 2000. The modified distribution map of V. triloba in Poland is presented.