DERRER, Saliha NazihaABDALLAH, BERREHAIL Leila2024-01-162024-01-162022https://theses.univ-temouchent.edu.dz/opac_css/doc_num.php?explnum_id=4737https://dspace.univ-temouchent.edu.dz/handle/123456789/1541Contribution to the study of the lichen diversity in the sassel forest ( Ain -Temouchent) The forest of Sassel is characterized by an important lichenic biodiversity, the goal of this study is to inventory and identify it at the forest level. The taxonomic identification of lichens was done with the help of some flora such as the flora of Ozenda and Clauzade (1970), guide to the lichens of France of Chantal Van Haluwyn trees (2013), booklet of lichens 2019 of Tela Botanica . We could identify 18 different species, which are distributed in 08 families, the most dominant are respectively Teloschitaceae, Parmeliaceae, Physciaceae, Ramalinaceae . The taxa recorded (86) are divided into species with different types of thallus: 70 foliaceous, 11 fruticular, 05 crustaceous.Lichens- Thallus- Lichenic flora-sasselforest (AinTemouchent)