1 | Botanischer Garten und Botanisches Museum, Freie Universität Berlin,
Königin-Luise-Straße 6–8, 14195 Berlin, Germany |
2 | Department of Botany, National Museum of Natural History, Smithsonian
Institution, Washington, DC 20013, USA |
3 | Botanical Research Institute of Texas, Fort Worth, TX 76107, USA |
4 | Department of Botany, University of Wisconsin, 430 Lincoln Drive,
Madison, Wisconsin 53706, USA |