Acknowledgments
The authors would like to thank Arnold Arboretum (Kyle Port), Gray Herbarium Harvard University (Emily Wood), Phil Tonne and Timothy Lowrey (University of New Mexico Herbarium), Lystigardurinn Arctic Botanical Gardens (Akureyri, Iceland), Debra Branker (Welchman Hall Gully, Barbados) for permission to collect flowers from their plants and herbarium specimens, and Robert Morris and Robert Stevenson (University of Massachusetts Boston) for advice with the creation and deployment of the key.
“This research was supported by the National Science Foundation (Grant #1056364)”
.jpg)