Recently, the description of a fungus species of Inocybe section Marginatae, Inocybe antoniniana, was published. Up to now, the species is known from Austria, Germany and Turkey. The preferred habitats of the mycorrhizal fungus are beech forests, partly mixed with other tree species. The new species has been described in detail with illustrations of micro- and macromorphology, as well as genetically using ITS sequences. The Austrian collection stems from Upper Austria, near Vöcklabruck. Thus we can register another species new for science and new for Austria within the framework of ABOL (HRSM project fungi, University of Vienna).