1. Cardiff University , Cardiff, Wales, United Kingdom
2. Florida Museum of Natural History , Gainesville, Florida, United States
3. Museum of Comparative Zoology , Cambridge, Massachusetts, United States
4. Statistical Genetics , Ahrensburg, Germany
5. Naturalis Biodiversity Center , Leiden, Netherlands
6. University of Michigan Herbarium , Ann Arbor, Michigan, United States
7. Field Museum of Natural History , Chicago, Illinois, United States
8. Biodiversity Institute, University of Kansas , Lawrence, Kansas, United States
9. University of Florida , Gainesville, Florida, United States
10. Central Michigan University Herbarium, Central Michigan University , Mt. Pleasant, Michigan, United States
11. Agriculture and Agri-Food Canada , Ottawa, Ontario, Canada
12. Department of Biological Science, Florida State University , Tallahassee, Florida, United States
13. Global Biodiversity Information Facility Secretariat , Copenhagen, Denmark
14. University of Illinois Urbana Champaign , Champaign, Illinois, United States
15. Atlas of Living Australia, CSIRO , Melbourne, Australia
16. Macaulay Library, Cornell Lab of Ornithology , Ithaca, New York, United States