A new species, Acantholimon avanosicum Dogan & Akaydin in the Plumbaginaceae is described and illustrated. The species grows on argillaceaus slopes in Central Anatolia, Turkey. The diagnostic morphological characters that distinguish it from closely related taxa are discussed. A revised key to Acantholimon species in Turkey with densely distichous simple spikes is presented. (C) 2002 The Linnean Society of London, Botanical Journal of the Linnean Society, 2002, 138, 365-368.