Preliminary results of studying the invasive flora fraction of the Rostov region are presented. The invasive fraction includes 69 seed plant species, among which acolyutophytes predominate according to the method of implementation, euneophytes predominate according to the time of implementation, and NorthAmerican plants predominate according to the native range plants are distributed; according to invasive statuses species are distributed as follows: 13 species – status 1 (transformer species), 19 species – status 2 (actively spreading and naturalizing in disturbed semi-natural and natural habitats), 20 species – status 3 (spreading and naturalizing in disturbed habitats, 17 species – status 4 (potentially invasive).

A.N. Shmaraeva, B.L. Kozlovsky, L.I. Makarova