1. Department of Biological Sciences; University of Memphis; Memphis TN 38152 USA
2. W. Harry Feinstone Center for Genomic Research; University of Memphis; Memphis TN 38152 USA
3. Department of Ecology and Evolutionary Biology; University of Arizona; Tucson AZ 85721 USA
4. Smithsonian Institute for Biodiversity Genomics; Center for Conservation and Evolutionary Genetics; National Zoological Park and Division of Mammals; National Museum of Natural History; Smithsonian Institution; Washington DC 20013-7012 USA
5. State Key Laboratory of Systematic and Evolutionary Botany; Institute of Botany; Chinese Academy of Sciences; Beijing 10093 China
6. Freie Universität Berlin Botanischer Garten und Botanisches Museum Berlin-Dahlem; Königin-Luise-Straße 6-8; Berlin 14195 Germany
7. Department of Botany; University of Hawaii, Manoa; Honolulu HI, 96822 USA
8. Department of Biology and the Huck Institutes of the Life Sciences; the Pennsylvania State University; University Park; PA 16802 USA
9. Ministry of Education Key Laboratory of Biodiversity Sciences and Ecological Engineering; School of Life Sciences; Fudan University; Shanghai 200438 China
10. Departamento de Botânica; Universidade de São Paulo; São Paulo SP, 05508-090 Brazil
11. Botanic Institute of Barcelona (IBB-CSIC-ICUB); Pg. del Migdia s. n.; Spain
12. Department of Plant Biology; Ecology, and Evolution, Oklahoma State University; Stillwater OK 74078 USA
13. Department of Botany; National Museum of Natural History; Smithsonian Institution Washington DC 20013-7012 USA