Language: French, with trilingual abstract in English, French and German
A list of 56 epiphytic macrolichens recorded in the Grand-Duchy of Luxembourg is commented – among them, 2 are new for the country, 7 for the Oesling and 1 for the Gutland. All species are mapped using the 1 km2 – grid of the IFBL. The composition and the richness of this macrolichen epiphytic flora, the ecology of the species – especially the relationships with the phorophytes – are discussed. The relative contributions of the various phytogeographical elements and tendencies, both in the Oesling and in the Gutland, are precised. Groups of taxa with similar distributions are presented.