1. Division of Biological Sciences, University of Missouri, 311 Bond Life Sciences Center, 1201 East Rollins St., Columbia, Missouri 65211, USA
2. Royal British Columbia Museum, 675 Belleville St., Victoria, British Columbia V8W 9W2, Canada
3. Rancho Santa Ana Botanic Garden and Claremont Graduate University, 1500 North College Ave., Claremont, California 91711, USA
4. Department of Biological Sciences, University of the Pacific, 3601 Pacific Ave., Stockton, California 95211, USA