1. Farlow Reference Library and Herbarium of Cryptogamic Botany, Harvard University, Cambridge, MA, United States of America
2. Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
3. Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN, United States of America
4. Institute of Evolutionary Ecology and Conservation Genomics, University of Ulm, Ulm, Germany
5. Agricultural Research Service, Southeastern Fruit and Tree Nut Research Laboratory, United States Department of Agriculture, Byron, GA, United States of America
6. Natuurmuseum Brabant, Tilburg, The Netherlands