From 3 to 8 June 2019 in Lecce (Italy), an 18th Conference of the International Workgroup for Palaeoethnobotany took place. was presented by members of the project there: ” Humans in the Environment: Plants and Landscapes in Mesolithic in the Paliwodzizna (Dobrzyń Lakeland, Northern Poland)” (authors Agnieszka M. Noryśkiewicz, Monika Badura, Grzegorz Osipowicz, Michał Jankowski and Piotr Weckwerth).