XVI International Botanical Congess

Two groups of synantropic plants are established in RFE: one of them includes 602 adventious (Ad) species belonging in 317 genera (173 of them are new and not characteristic of the aboriginal flora) and 59 families amounting to 14%, of the total flora of the region, the second group comprises 428 species called apophytes (Ap) which are distributed among 209 genera and 52 families, 10%,. Almost 50%, of Ad cover Asteraceae (106 species), Poaceae (106), Fabaceae (43), Brassicaceae (42). The leading genera are Potentilla (14), Veronica (12), Trifolium and Amaranthus (10 in each of them). 187 genera are represented by only 1 species. Among Ap, the most plentiful are Asteraceae (74 species), Polygonaceae (54), Poaceae (46), while the dominating genera are Artemisia (18), Persicaria (16), Potentilla and Taraxacum (15 in each). Their ecological and geographical analyses are carried out.