Abstract
With the aim of updating our knowledge of our natural heritage, a study was carried out on the vegetation of the Oued Sahel valley (North Algerian), an area of Kabylia that is little studied. The sampling of the flora revealed the existence of three new species for the flora of Kabylia, sector of Djurdjura/ Bibans (Dipcadi serotinum, Silybum eburneum, Cyperus laevigatus subsp. distachyos) and five taxa rediscovered for the study area (Silene muscipula subsp. muscipula, Platycapnos tenuiloba, Deverra scoparia subsp. scoparia, Juncus subulatus, Cistanche phelypaea s.l.). The habitat of these species is threatened by human activities, such as grazing and intensive water pumping. These discoveries enrich the flora of Oued Sahel in particular and that of Djurdjura and Bibans' Kabylia in general; two sectors already recognized as key biodiversity areas (Important Plants Areas).