XVI International Botanical Congess

The floristics composition and distribution of antropophytes esteblished in Western Regions of Ukraina were studied. 148 species of archeophytes and 150 species of kenophytes (neophytes) have been discovered. The distribution of kenophytes were studied by means of mapping with using of different marks for data before and after 1950. For 20 kenophytes which have been spread after 1990, the maps with dated of all locations were constract. Two regions were determined as regions with the most intensive spreading and naturalization of antropohytes Zakarpatska plane and Dnister valley. The distribution of 10 species among archeophytes have been reduced. Seven species haven't been noted in flora of Western Regions of Ukraina during last 50 years. Biogeographic analysis show that the basic territories aliens came from are: South Europe, West Asia and North America.