1. Department of Botany, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden
2. Department of Biological Sciences, Campbell University, 205 Day Dorm Road, Buies Creek, NC 27506, USA
3. AMAP, IRD, CIRAD, CNRS, INRA, Université Montpellier, 34000 Montpellier, France
4. Department of Palaeobiology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden
5. Department of Psychology, Gothenburg University, Box 500, SE-405 30 Göteborg, Sweden