A further evaluation of recent collections, many made by Irarnan researchers, of herbarium material, mainly in Turku, Helsinki and London and of the literature, has revealed many additions to our knowledge of the liehen flora of Iran. To date, 645 taxa (590 lichens and 55 lichenicolous and allied fungi) have been recorded from Iran, 242 of which are additional to the 2004 checklist. New combinations for Aspicilia persica and A. straussii are proposed and the species lectotypified