Dollar spot is one of the most destructive globally distributed diseases of turfgrass. The identity of the fungus responsible for the disease has been the subject of debate for more than 75 years. These datasets provide the phylogenetic evidence from three nucleotide sequence markers (CaM, ITS and Mcm7) that underlie the establishment of the new fungal genus Clarireedia, which includes four species that cause turfgrass dollar spot disease: Clarireedia homoeocarpa, C. bennettii, C. jacksonii, and C. monteithiana. Datasets include the DNA sequence alignments for the CaM, ITS and Mcm7 markers for exemplar Clarireedia isolates, and the complete combined phylogenetic dataset and phylogenetic tree file. Resources in this dataset:Resource Title: DNA sequence alignment, combined dataset. File Name: Allgenes_alignment.txtResource Title: Phylogenetic tree file. File Name: Allgenes_phylogenyMrBayes.nex.con.tre.txtResource Description: Derived from analysis of DNA sequence alignmentResource Title: DNA sequence alignment of CaM marker for dollar spot fungi exemplars. File Name: CaM_DS_diagnostic sites.txtResource Title: DNA sequence alignment of ITS marker for dollar spot fungi exemplars. File Name: ITS_DS_diagnostic sites.txtResource Title: DNA sequence alignment of Mcm7 marker for dollar spot fungi exemplars. File Name: Mcm7_DS_diagnostic sites.txt