Two new lichenized species and a new record from Guizhou, China

Two new lichenized species, <i>Chicitaea yueliangshanensis</i> and <i>Coniocarpon chishuiense</i> are described through the combination of morphological characteristics, chemical profiling and phylogenetic analyses, along with a new geographical record of <i>Synarthonia inconspicua</i>, collected from Guizhou, China. <i>Chicitaea yueliangshanensis</i> is characterized by prominent lecanorine apothecia with a black, epruinose, ± flat disc and lacking isidia and soredia. This species contains perlatolic acid, 2'-O-methylperlatolic acid and an unidentified lichen substance. It forms a well-supported singleton based on both ML and Bayesian analyses in the phylogenetic tree. Another new species, <i>Coniocarpon chishuiense</i> is distinguished by irregularly rounded to elliptical ascomata with epruinose disc and the presence of psoromic acid along with an unknown compound. Detailed morphological descriptions, illustrations and a compiled species checklist summarizing diagnostic features are provided.