1. Faculty of Sciences Agostinho Neto University Av. 4 de Fevereiro 71 LuandaCP 815Angola
2. Biodiversity, Evolution and Ecology of Plants Institute of Plant Science and Microbiology University of Hamburg Ohnhorststr. 18 Hamburg22609Germany
3. Faculty of Natural Resources and Spatial Sciences Namibia University of Science and Technology Windhoek10005Namibia
4. Department of Natural Sciences Herbarium of LubangoISCED Huíla Sarmento Rodrigues str. LubangoCP 230Angola
5. Plant Physiology and Biochemistry Institute of Botany São PauloCP 3005, CEP 01061‐970Brazil