Functional trait, population genomic, and source climate data for Andropogon gerardii populations across North America

This dataset supports a study investigating how climate and geography structure functional and genomic differentiation in big bluestem (Andropogon gerardii). It includes common-garden functional trait measurements, source-population climate and geographic metadata, and genotyping-by-sequencing data comprising 3,647 filtered SNPs from 91 individuals representing 17 genomic populations. The accompanying analyses examine population-level trait differentiation, genomic diversity, climatic associations, and concordance between genomic and functional variation.