Observations sur des plantes rares ou en extension à Lille et environs (département du Nord, France)

Observations on rare or increasing plants in Lille and surrounding areas (Nord department, France). Several years of fieldwork in the Lille metropolitan area (France, department Nord), mostly between 2020 and 2023, yielded numerous interesting records of vascular plants. Many thermophilous species have recently reached the area and seem to be in the process of an incipient naturalization (or are already locally naturalized). This concerns both northward expanding native species and truly exotic species. Interesting records include Galium murale, Gamochaeta subfalcata, Oloptum miliaceum, Solanum chenopodioides and Veronica cymbalaria, among others.