1. University of Florida Herbarium (FLAS), Florida Museum, Department of Natural History, University of Florida, Gainesville, FL 32611, USA
2. Department of Research and Conservation, Desert Botanical Garden, Phoenix, AZ 85008, USA
3. Department of Biology, University of Florida, Gainesville, FL 32611, USA
4. Centro de Ciências Humanas e Biológicas, Departamento de Biologia, Universidade Federal de São Carlos (UFSCar), Sorocaba 18052-780, SP, Brazil