SUMMARY
A new homothallic species of Neurospora, N. lineolata is described. Thefungus was isolated from soil collected in the vicinity of Lahore, West Pakistan. Of the three other homothallic species with bipolar ascospores, N. lineolata most closely resembles N. africana; it differs, however, from this species by having narrower ascospores with numerous indistinct ribs and. intercostal veins, and larger, beaked perithecia. Ascospore germination in N. lineolata is uni- and bipolar. The bipolar pattern appears to predominate. N. lineolata represents the twelfth species now placed in the genus Neurospora. A key to all species in the genus is provided.