While revising the lichen genus Buellia sensu lato from India, species Cratiria rubrum with brick red pigmented thallus is described as new to science. The new species is characterized by a red pigmented thallus, Buellia type ascospore, KOH+ red. Five species are reported for the first time from India viz., Amandinea efflorescens, A. incrustans, Baculifera orosa, Hafellia dissa and H. reagens.