1. Centre for Ecology and Hydrology; CEH Edinburgh; Penicuik Midlothian EH26 0QB UK
2. Estación Experimental Forestal Camaguey; Instituto de Investigaciones Forestales; Rpto. La Zambrana C.P. 70100 Camaguey Cuba
3. Laboratorio de Ecología de Plantas; Escuela de Ciencias Biologicas; Pontificia Universidad Católica Ecuador; Quito Ecuador
4. Área de Diversidad Genética; Instituto de Investigaciones Forestales; Universidad Nacional; San José Costa Rica
5. Plant Genetics Institute; National Research Council; 50019 Sesto Fiorentino (FI) Italy
6. Australian Centre for Evolutionary Biology and Biodiversity (ACEBB) and School of Earth and Environmental Sciences; University of Adelaide; Adelaide SA 5005 Australia
7. State Herbarium of South Australia; Science Resource Centre; Department of Environment and Natural Resources; Adelaide SA 5005 Australia