“…Our understanding of the evolutionary ecology of trees is also shaped by the evolutionary historical context in which comparisons are made. For example, many studies have evaluated local adaptation and the fit of plant phenotypes and genotypes to contemporary environments and climate variation, and have done so within an implicit or explicit framework for the relevant evolutionary history, including species boundaries, hybridization and gene flow (Alberto et al, 2013;Lind et al, 2017;Lindtke, Gompert, Lexer, & Buerkle, 2014;Yeaman et al, 2016). The evolutionary and historical context for studies of trait variation will determine what processes and dy- obtained through DNA sequencing means that some previously intractable relationships between groups can be reconstructed (e.g., Lamichhaney et al, 2015;Martin et al, 2015;McVay et al, 2017;Meier et al, 2017;Wagner et al, 2013) and that sampling of taxa and populations can more comprehensively assay genetic variation near the species level and tie it to evolutionary processes (e.g., Gompert et al, 2014;Mandeville, Parchman, McDonald, & Buerkle, 2015;Parchman, Buerkle, Soria-Carrasco, & Benkman, 2016;Zhou et al, 2017).…”