A new species of the genus Lagochilus Bunge ex Benth. from Iran and Turkmenistan, L. khorassanicus Zeraatkar, F. Ghahrem. & Joharchi, is described and illustrated here. The new species most closely resembles L. schugnanicus Knorring of Afghanistan, Pakistan, and the mountain ranges of Central Asia. It is easily differentiated from other species of the Flora Iranica area by the bracteole morphology and number of flowers in verticillasters. A key to the species of that area and a distribution map of the new species and its relatives are provided.
This new species was introduced by botanists of Kharazmi University and Ferdowsi University of Mashhad. This scientific event was published on November 21, 2017, at the Novon Botanical Journal.