Abstract
Violella yunnanensis C. J. Zhong & L. Hu is described as new to science. It is characterized by its esorediate, areolate to weakly warted thallus, hymenium heavily pigmented with Fucatus-violet pigment, brownish inner ascospore walls, and its chemistry (atranorin and fumarprotocetraric acid). In addition, we collected specimens of Mycoblastus sinensis Kantvilas and Violella wangii T. Sprib. & Goffinet from the holotype localities. Mycoblastus sinensis is transferred to the genus Violella based on its morphology, chemistry and phylogeny, and it is proposed as Violella sinensis (Kantvilas) C. J. Zhong & L. Hu. The morphological descriptions, pictures and molecular phylogenetic analyses of the species are provided, along with a key to the Violella species known from world.