1. Centraalbureau voor Schimmelcultures; P.O. Box 85167,AD Utrecht 3508 the Netherlands
2. Duke University, Biology Department, Box 90338, Durham; North Carolina 27708 U.S.A.
3. Uppsala University, Evolutionary Biology Centre, Department of Systematic Botany, Norbyvägen 18D; Uppsala 752 36 Sweden
4. Botany Department; Natural History Museum, Cromwell Road; London SW7 5BD U.K.
5. Chemin des Vignes vieilles; Mirabeau 84120 France
6. Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111; Birmensdorf 8903 Switzerland
7. Universidad Rey Juan Carlos, ESCET, Área de Biodiversidad y Conservación, c/ Tulipán s/n, Móstoles; Madrid 28933 Spain
8. Icelandic Institute of Natural History, Akureyri division; P.O. Box 180, 602 Akureyri Iceland
9. Naturhistorisches Museum Wien, Botanische Abteilung; Burgring 7,Wien 1010 Austria
10. Department of Biodiversity and Systematic Biology; National Museum of Wales, Cathays Park; Cardiff CF10 3NP U.K.
11. Botanical Museum, Östra Vallgatan 18; 223 61 Lund Sweden
12. Department of Zoology; Institute for Ecology,Copenhagen University, Thorvaldsensvej 40; Frederiksberg C 1871 Denmark
13. Departament de Biologia Vegetal (Botànica); Facultat de Biologia, Universitat de Barcelona, Diagonal 645; Barcelona 08028 Spain
14. Laboratory of Lichenology, Institute of Botany, Polish Academy of Sciences, Lubicz 46; Kraków 31-512 Poland
15. Finnish Environment Institute, Research Programme for Biodiversity; P.O. Box 140, Helsinki 00251 Finland
16. Karl-Franzens-Universität Graz, Holteigasse 6; Graz 8010 Austria