First record of American skunk-cabbage Lysichiton americanus Hultén & H. St. John (Araceae) in Poland

Lysichiton americanus is a robust rhizomatous plant native to the Pacific part of North America.This species was introduced to Europe in Great Britain at the beginning of the 20 th century and since then, due to its aesthetic value, it has been used as an ornamental plant in numerous European countries.Since then and after numerous introductions, established populations of this plant have been reported in 9 European countries.It was classified by the European Union as an invasive non-native plant species.The current study describes the first record of a wild-growing population of L. americanus in Poland.It was found in an overgrown former pond, neglected for about 50 years, near the rural park located in the Sudetes Mountains (south-west Poland).Apart from its distribution, its phytosociological affiliation and status in the Polish flora are also described.