1. Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002 USA
2. Department of Plant and Microbial Biology, University of California, Berkeley 94720 USA
3. Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611‐7800 USA
4. Department of Paleobiology, Smithsonian Museum of Natural History, 10th Street and Constitution Avenue, NW, Washington, DC 20560 USA
5. Instituto de Biología, Universidad de Antioquia, AA 1226, Medellín, Colombia