1. Institute of Resource Assessment (IRA) University of Dar es Salaam Dar es Salaam Tanzania
2. University of Bern, Institute of Plant Sciences Bern Switzerland
3. Global Mountain Biodiversity Assessment University of Bern, Institute of Plant Sciences Bern Switzerland
4. Department of Ecology Faculty of Sciences Universidad Autónoma de Madrid Madrid Spain
5. GloCEE – Global Change Ecology & Evolution Group, Department of Life Sciences Universidad de Alcalá Alcalá de Henares Spain
6. National Herbarium of Tanzania Tropical Pesticides Research Institute Arusha Tanzania
7. Department of Plant Systematics University of Bayreuth Bayreuth Germany