Ferulago trojana E. Akalin & Pimenov sp. nov., is described from western Turkey. It is closely related to F. confusa, F. silaifolia and F. thirkeana. Diagnostic characters of these species and European F. sylvatica are discussed. (C) 2004 The Linnean Society of London, Botanical Journal of the Linnean Society, 2004, 146, 499-504.