1. Institute of Plant Sciences; University of Bern; Bern Switzerland
2. Oeschger Centre for Climate Change Research; Bern Switzerland
3. Tropical Pesticides Research Institute (TPRI); Arusha Tanzania
4. Department of Systematic Botany; University of Bayreuth; Bayreuth Germany
5. Senckenberg Gesellschaft für Naturforschung, Biodiversity and Climate Research Centre (BiK-F); Frankfurt Germany