New species and records of Chapsa (Graphidaceae) in China

We studied the genus in China based on morphological characteristics, chemical traits and molecular phylogenetic analysis. One species new to science ( M.Z. Dou & M. Li) and two records new to China were found ( Weerakoon, Lumbsch & Lücking and Mangold). is characterised by its lobed thalline margin, orange discs with white pruina, clear hymenium, and submuriform and long ascospores. was recombined into based on phenotypic traits. Sequences of this species are for the first time reported here and phylogenetic analyses of three loci (mtSSU, ITS and nuLSU) supported the position of this species within . A key for the species known in China is provided.