An attempt at determining the status of selected localities of woodbine (Lonicera periclymenum L.) in Poland.
In Poland woodbine is a representative of the holarctic geographical element with the sub-Atlantic distribution. In the case of this species the greatest accumulation of natural localities is found in the Pobrzeże Szczecińskie region. This species has been reported in numerous localities in the Lower Silesia. It is rather rare in the Lubuskie and the Wielkopolska regions, as well as central and eastern regions of Poland. Due to the considerable distance from the main, north-western centre of its natural range and popularity as a cultivated plant, naturalness of at least some of its localities seems questionable. The aim of this study wasto make an attempt at the determination of the Lonicera periclymenum status in 31 forest localities of this climber, recorded by the authors in western and central Poland. Based on the analysis of such characteristics as the size and position of a locality in relation to the forest margin and roads, the character of the plant community, the share of alien species and the vicinity of potential cultivation sites it was established that in all the investigated localities woodbine probably appeared as an introduced species thanks to direct or indirect human activity. Thus it is likely that other localities, to date considered to be natural, may also be anthropogenic.