Floristic diversity in Dahra region northwest of Chlef (Western Algeria)

The study was undertaken in the Dahra region northwest of Chlef West Algeria in 2019 to invent natural vegetation and characterized it in syntaxomic, biological, morphological and chorological terms.by Zuricho Montpelierine method.The method include all the plant species encountered and make the list of species on a square of 100 m² (minimum area). The floristic inventory indicated more than 138 taxa, divided into 54 families belongs to the Mediterranean biogeographic type with a percentage of 38.7%. There is a therophytization marked by a general invasion of annual species (39%).