New floristic records from Central Europe 12 (reports 164-175)

The presented 12th part of the series includes twelve new records of vascular plants from Poland, Slovakia and the Ukrainian Carpathians. In Poland, two alien species, Ficus carica and Geranium rotundifolium are mentioned. New localities of Angelica archangelica, Primula halleri and Ranunculus thora were recorded in the Ukrainian Carpathians. New alien for the flora of Slovakia, Knautia macedonica, is firstly reported and new localities for Pseudofumaria lutea, Salvia abrotanoides × S. yangii and Thladiantha dubia were found. Phytogeographically interesting finding of critically endangered Centaurea solstitialis in the Bukovské vrchy Mts. was recorded and the spreading of Tribulus terrestris by railway traffic to secondary habitats was observed. New localities of the Eastern Carpathian subendemic taxon Thymus alternans in the Bukovské vrchy and Vihorlat Mts is presented with its distribution map.