Dafaalla Ali Ibrahim is Associate Professor, University of Khartoum, Faculty of Sciences, Department of Botany, Sudanese. He received candidatus scientarium from the University of Bergen, Norway. He was a general director of Taaseel directorate, Ministry of Higher Education and Scientific Research 2009-2001. He is a Co-author of the Integrated Dictionary of Biological Terms. His main interests are plant ecology and conservation biology