During a lichenological survey on a semiarid area with huge changes in land use in the western slopes of Binalud Mt., two species of Sarcogyne Flot. (Acarosporaceae) were found. The species S. calcifraga is recorded for the first time in Iran. S. clavus is added to the known lichen biota of the province Razavi Khorasan, NE Iran. A comparison on the base of characters distinguishing these two species from the most similar Sarcogyne taxa is done. A key for the known species of Sarcogyne in Iran is also provided.