LAUSR

The article presents a list of invasive and potentially invasive plants in the flora of the Middle Volga region (in Samara oblast and Ulyanovsk oblast) for the first time. The list includes 59 species distributed in groups according to their activity, features of interaction with native species, and the nature of occupied habitats. For most species, the time of entry to the flora of the region is found. Some theoretical aspects of the introduction of blacklists are discussed.