GBS data for Centaurea tenorei sensu lato and related species. Centaurea tenorei

The Centaurea tenorei group encompasses taxa that are narrowly endemic to the Sorrento Peninsula (Southern Italy) with a complex evolutionary and taxonomic history caused by hybridization and high morphological variability. In this study, we used a panel of SNPs obtained via genotyping-by-sequencing (GBS) to assess population structure and admixture in this group. We also used ploidy information from traditional chromosome counts and NGS estimations.