Bounar Rabah, Bahlouli Faycal, Rebbas Khellaf, Ghadbane Mouloud, Cherief Abdelkader, Benderradji Laid, Flora of Ecological and Economic Interest of the Area Dreat (Northern of Hodna, Algeria), Environmental Research Journal, Volume 6,Issue 3, 2012, Pages 235-238, ISSN 1994-5396, erj.2012.235.238, (https://makhillpublications.co/view-article.php?doi=erj.2012.235.238) Abstract: The area of Dreat extends on a surface from 16880 ha. It shelters 319 species belonging 208 botanical kinds and to 51 families. The families most represented are the family of Asteraceae followed by the family of Fabaceae, Brassicaceae, the family of Lamiaceae, the family of Poaceae and other family with small degree of presence. This zone is primarily made up by species of Mediterranean stock. The biological types most represented are: the therophytes and the hemicryptophytes followed by the geophytes, the phanerophytes and the chamaephytes are represented. This floristic diversity contains 28 endemic (s.l.), 32 rare species and 141 plants of economic interest. Keywords: Hodna;Dreat;flora;endemic;rare;plants of economic interest