Abstract
The taxonomy of North African Diplotaxis taxa related to D. virgata is addressed. On the basis of extensive morphological observations on dried and living material, the status of D. virgata f. sahariensis (from southern Morocco and northwestern Algeria) is raised to species level as D. sahariensis comb. et stat. nov., and that of D. catholica var. tenuirostris is changed to D. virgata subsp. tenuirostris stat. nov. A new species, Diplotaxis australis sp. nov., is described from southwestern Morocco. A key for the identification of species within the D. virgata-alliance is provided.