1. Forest, Landscape and Biomass; University of Copenhagen; Rolighedsvej 23 Frederiksberg C DK-1958 Denmark
2. World Agroforestry Centre; P.O. Box 30677- 00100 Nairobi Kenya
3. Natural History Museum of Denmark; Sølvgade 83 Copenhagen Denmark
4. The National Herbarium; Department of Plant Biology and Biodiversity Management; College of Natural Sciences; Addis Ababa University; P.O. Box 3434 Addis Ababa Ethiopia