1. Systematic Botany and Mycology; Department of Biology; University of Munich (LMU); Munich 80638 Germany
2. INRA Montpellier; UMR AGAP; 2 Place Viala F-34060 Montpellier France
3. Royal Botanic Gardens; Kew, Richmond Surrey TW9 3AB UK
4. University of Montpellier 2; UMR DIADE, Place Eugène Bataillon F-34 095 Montpellier France