1. Institute of Ecology and Evolution of Plants Systematic Botany with Herbarium Haussknecht and Botanical Garden Friedrich‐Schiller‐University Jena Jena Germany
2. Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium) Albrecht‐von‐Haller Institute for Plant Sciences University of Goettingen Goettingen Germany
3. Landschaftspflegeverband Suedharz/Kyffhaeuser e.V. Nordhausen Germany