1. University of Florida Herbarium (FLAS), Florida Museum of Natural History University of Florida Gainesville Florida 32611 U.S.A.
2. Department of Research, Conservation and Collections Desert Botanical Garden Phoenix Arizona 85008 U.S.A.
3. Grupo de Ecología y Conservación Jardín Botánico Nacional, Universidad de La Habana Cuba
4. Planta! – Plantlife Conservation Society British Columbia Canada
5. Department of Biology University of Florida Gainesville Florida 32611 U.S.A.
6. Departamento de Botánica Jardin Botánico Nacional “Dr. Rafael M. Moscoso” Santo Domingo Dominican Republic