ddRADseq data of  Eriogonum fasciculatum var. polifolium
We used the 2RAD DNA sequencing approach (Bayona-Vsquez et al. 2019) to isolate single nucleotide polymorphism (SNP) markers for genomic analysis of Eriogonum fasciculatum. We digested genomic DNA with EcoRI and MseI (New England Biolabs) in a single reaction and used Solid Phase Reversible Immobilization (SPRI) beads (Beckman Coulter) to purify the digestions prior to ligating uniquely bar-coded adapters with T4 ligase (New England Biolabs). Libraries were size-selected between 250 and 400 base pairs (bp) using a Pippin Prep size fractionator (Sage Science). The final library amplification used proofreading Taq and Illumina's indexed primers. The fragment size distribution and concentration of each pool was determined on an Agilent Bioanalyzer and qPCR was performed to determine library concentrations.