1. Dipartimento di Biologia Vegetale, Università‘La Sapienza’, P. le Aldo Moro 5, 00185 Rome, Italy;
2. CNR, Plant Genetics Institute, Florence Division, National Research Council, Polo Scientifico Sesto Fiorentino, Via Madonna del Piano, Edificio D, I‐ 50019 Sesto Fiorentino, Florence, Italy;
3. Laboratoire d’Ecologie Génétique, Université Bordeaux I, F‐33405 Talence, France;
4. Computational and Molecular Population Genetics Laboratory, University of Bern, CH‐3012 Bern, Switzerland;
5. Department of Genetics, Federal Research and Training Centre for Forests, Natural Hazards, and Landscape, Hauptstrasse 7, A‐1140 Vienna, Austria;
6. Technical University, Faculty of Forestry, SK‐960 53 Zvolen, Slovakia;
7. Department of Plant Ecology, University of Gdańsk, A1. Legionów 9, PL‐80‐441 Gdańsk, Poland;
8. Institute of Paleontology, University of Bonn, Nussallee 8, D‐53115 Bonn, Germany;
9. Department de Biologia Animal, Biologia Vegetal i Ecologia, Universitat Autònoma de Barcelona, E‐08193 Bellaterra (Barcelona), Spain;
10. Babes‐Bolyai University, Department of Geology, Str. M. Kogalniceanu nr. 1, RO‐400084 Cluj‐Napoca, Romania;
11. Institute of Plant Sciences, University of Bern, Altenbergrain 21, CH‐3013 Bern, Switzerland;
12. INRA, UMR Biodiversité, Gènes & Ecosystèmes, 69 Route d’Arcachon, F‐33612 Cestas Cedex, France;
13. UMR CNRS 6116, Europôle de l’Arbois, B.P. 80, F‐13545 Aix‐en Provence, France