1. Real Jardin Botanico, Department of Biodiversity and Conservation, CSIC, Plaza de Murillo 2, 28014 Madrid, Spain
2. Institute of Biology, University of Neuchâtel, Rue Emile-Argand 11, CH-2000 Neuchâtel, Suisse
3. Molecular Systematics Section, Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
4. Department of Ecology and Evolution, Biophore, University of Lausanne, 1015 Lausanne, Switzerland
5. Swiss Institute of Bioinformatics, Génopode, Quartier Sorge, 1015 Lausanne, Switzerland