1. Negaunee Institute for Plant Conservation Science Chicago Botanic Garden 1000 Lake Cook Road Glencoe Illinois 60022 USA
2. Department of Botany University of Wisconsin‐Madison 430 Lincoln Drive Madison Wisconsin 53706 USA
3. Department of Biological Sciences Louisiana State University Baton Rouge Louisiana 70808 USA
4. Center for Computation & Technology Louisiana State University Baton Rouge Louisiana 70808 USA
5. Department of Biology Northland College Ashland Wisconsin 54806 USA
6. Department of Biological Sciences University of Wisconsin‐Parkside Kenosha Wisconsin 53144 USA