1. University of North Carolina Herbarium (NCU), CB #3280 Coker Hall, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3280, U.S.A.
2. Department of Biological Sciences, 137 Biological Sciences Building, 130 Science Drive, Box 90338, Duke University, North Carolina 27708-0338, U.S.A
3. Laboratório de Botânica / Liquenologia, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Avenida Costa e Silva s/n, Bairro Universitário, CEP 79070-900, Campo Grande, Mato Grosso do Sul, Brazil
4. Botanischer Garten und Botanisches Museum, Freie Universität Berlin, Königin-Luise-Straße 6–8, 14195 Berlin, Germany
5. Naturhistoriska riksmuseet, Enheten för botanik, Box 50007, 104 05 Stockholm, Sweden
6. Meise Botanic Garden, Department of Research, Nieuwelaan 38, 1860 Meise, Belgium, and Fédération Wallonie-Bruxelles, Service général de l'Enseignement supérieur et de la Recherche scientifique, Rue A. Lavallée 1, 1080 Bruxelles, Belgium