Affiliation: | 1. Department of Biology, Duke University, Box 90338, Durham, North Carolina 27708 USA;2. Kenneth S. Norris Center for Natural History, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064 USA;3. The Morton Arboretum, 4100 Illinois Route 53, Lisle, Illinois 60532‐1293 USA |