Rearranging the Bird's Nest Fungi: molecular review of internal clades in Cyathus (Nidulariaceae, Basidiomycota).

The genus Cyathus was established in 1768, but more in-depth taxonomic studies with the group only occurred after 1844. In the following years, changes in the infrageneric classification of Cyathus were proposed based mainly on morphology. With advances in phylogenetic studies, the morphological classifications were tested and a new subdivision into three groups was proposed in 2007.