Morphological and anatomical characteristics of the laminas of the tufts of alfa (Stipa tenacissima L.) of different populations of Kasserine region in Tunisia Journal title: Journal of Biodiversity and Environmental Sciences (JBES) Authors: Rhimi Nasri Intissar, Abdessamad Abdessalem, Ksontini Mustapha, Ferchichi Ali Subject(s): Biological Sciences, Environmental Sciences, Biology