Article

Within Aristolochia, the population cluster from S Anatolia (Turkey) morphologically characterized by a ± straight perianth tube and an expanded twoauricled limb has' long been referred to one species, A. auricularia, from which a second one, A. rechingeriana, has been separated recently. Study of herbarium material has led to the recognition of four closely related species, here described and illustrated, the former two and two new ones: A. geniculata and A. isaurica.