干旱区生态环境知识资源中心

During preparation of an inventory of dematiaceous hyphomycetes from dead plant material in six areas of extreme biological importance of Cattinga biome, some species of Dictyochaeta were found. Dictyochaeta caatingae and D. intermedia are proposed as new species. Dictyochaeta britamica, D. microcylindrospora, D. obesispora, and D. setosa are new records to the American continent, while D. heteroderae is new to the neotropics and D. triespata is new to Brazil. These species are described, discussed and illustrated. A key to know species collected in Brazil is provided.