A further locality with foliicolous lichens in Italy, with taxonomical andecological data on foliicolous lichens in Western Europe

14 lichen species and 3 lichenicolous fungi growing on them have been found on living leaves, mainly of Buxus, in a deep and sheltered ravine in Campa nia (Italy), at low elevation, in the Mediterranean region. These figures a re similar to those at the richest sites with foliicolous lichens in the We stern Pyrenees. Further data on the ecology of foliicolous lichens in Weste rn Europe are provided. Four 'ecological' groups are recognized amongst lic hens observed on living leaves in Western Europe, the strictly foliicolous one being only a minority, with either pantropical species or species with a restricted distribution. The new combination Strigula minor (Vezda) Cl. R oux & Serus. is introduced. (C) 2000 Adac/Editions scientifiques et medical es Elsevier SAS.