Diploschistes viridis sp. nov. is described from the Himalayan moist temperate forest, Pakistan. ITS sequences confirm its position within the genus Diploschistes and, together with its morphology and chemistry, suggest that it is distinct from other species of this genus. The taxon is characterized by the light green to greenish gray epruinose thallus, small apothecia 0.2-0.5 mm wide, small areoles 0.4-0.7 mm, hymenium 140-165 mu m high, 3-4 transverse and 1-3 longitudinal septa in large ascospores 28-40 x 18-26 mu m; it also differs from related species in the ITS region. arid and semiarid regions, crustose species, lichen diversity, temperate latitudes, GENUS DIPLOSCHISTES