Les Orchidacees de la region de Tlemcen (Algérie)

Resume Cette etude vise a mieux connaitre le patrimoine floristique de l’Algerie. Dans ce travail nous avons dresse une liste des orchidees de la region de Tlemcen grâce a une serie de prospection realisee entre 2006 et 2018 et qui s’est soldee par l’inventaire de 11 genres, comprenant 48 taxons dont 329 especes et 2 hybrides. Des cartes de repartition et des donnees ecologiques ont ete etablies pour chaque espece afin d’aider a les retrouver pour des eventuelles recherches. Certains taxons presentent une large distribution a travers la region de Tlemcen, alors que d’autres sont tres localises. Parmi les taxons observes, 27 sont qualifies de rares ou tres rares a l’echelle du pays. Mots cles: Orchidees, region de Tlemcen, endemique, protection, chorologie. Summary Orchidaceae of the region of Tlemcen (Algeria). This study aims at knowing better floral heritage of Algeria. In this work we so raised a list of the orchids of the region of Tlemcen en thanks to a series of prospecting realized between 2006 and 2017 and which ended in the inventory of 11 genres including 48 let us taxa among which 29 species and 2 hybrids. Maps of distribution and ecological data were established for every species help to find them for possible look for. Some let us let us tax present a wide distribution through the territory of the wilaya, while others are very located (localized). Among tax them observed, 26 are considered as rare or very rare on the scale of the country. Key words : Orchids, Tlemcen region, endemic, protection, chorology.