1. Lewis Burke Associates, Washington, DC, United States
2. University of California Santa Cruz, Santa Cruz, California, United States
3. Harvard University, Cambridge, Massachusetts, in the United States
4. The Field Museum, Chicago, Illinois, United States
5. Instituto de Ciencias Humanas, Sociales y Ambientales of the Consejo Nacional de Investigaciones Científicas y Técnicas, Mendoza, Argentina
6. American Society of Plant Biologists, Rockville, Maryland, United States
7. Yunnan University, People's Republic of China, and with the Department of Anthropology, University of New Mexico, United States
8. American Institute of Biological Sciences, Herndon, Virginia, United States