01103nas a2200121   4500008004100000245009900041210006900140300001000209490000700219520058400226100002400810856014700834       2010                        eng d00aPetasites japonicus en voie de naturalisation dans le sud de la province de Hainaut (Belgique)0 aPetasites japonicus en voie de naturalisation dans le sud de la   a13-220 v983 aPetasites japonicus is naturalizing in the south of the province of Hainaut (Belgium). Petasites japonicus subsp. giganteus was discovered in a small waste ground (probably an old garden) along a former railway line at Sivry-Rance (Walloon province of Hainaut, Belgium). Only male plants were found. An identification key to the four species of the genus Petasites occurring in Belgium, phenological observations, a description of the habitat of this neophyte, and an overview of records in Belgium are provided. The mode of introduction and its status in Wallonia are discussed.1 aLECRON, Jean-Michel  uhttps://alienplantsbelgium.myspecies.info/content/petasites-japonicus-en-voie-de-naturalisation-dans-le-sud-de-la-province-de-hainaut-belgique