1. Department of Botany 6270 University Boulevard University of British Columbia Vancouver BC V6T 1Z4 Canada
2. UBC Botanical Garden & Centre for Plant Research 6804 Marine Drive SW University of British Columbia Vancouver BC V6T 1Z4 Canada
3. Department of Biological Sciences 5151 State University Dr. California State University Los Angeles CA 90032‐8201 USA
4. Evolution, Ecology & Population Biology Division of Biology Washington University in St. Louis One Brookings Drive St. Louis MO 63130 USA
5. Department of Ecology and Evolutionary Biology University of Connecticut Storrs CT 06269‐3043 USA
6. L. H. Bailey Hortorium and Section of Plant Biology Cornell University Ithaca NY 14853 USA
7. Natural History Museum of Denmark University of Copenhagen Sølvgade 83 Opg. S DK‐1307 Copenhagen Denmark
8. New York Botanical Garden Bronx NY 10458 USA
9. Department of Botany University of Wisconsin Madison WI 52706 USA
10. Australian Centre for Evolutionary Biology and Biodiversity & Sprigg Geobiology Centre School of Biological Sciences Benham Bldg DX 650 312 The University of Adelaide Adelaide SA 5005 Australia