1. Department of Biology, East Carolina University, Greenville, NC 27858, USA
2. Department of Biology, University of Ottawa, Ottawa, ON, Canada, K1N 6N5
3. Department of Biology, Queen’s University, Kingston, ON, Canada, K7L 3N6
4. Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada, V5A 1S6
5. Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA
6. Department of Biology, Dalhousie University, Halifax, NS, Canada, B3H 4J1
7. Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
8. Department of Plant Biology, University of Minnesota, 1445 Gortner Avenue, Saint Paul, MN 55108, USA
9. Botany Department, Field Museum of Natural History, Chicago, IL 60605, USA
10. School of Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA, UK
11. Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA