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(a) Map of sampled ecotype pairs of Heliosperma pusillum (alpine ecotype, orange; montane ecotype, purple) in south‐eastern Alps. The extension of the ice sheet during the Last Glacial Maximum is shown with a solid black line. The inset shows the position of the sampling area in Europe. (b) Barplots showing proportion of ancestry relative to k = 6 clusters as inferred in faststructure. Colors identifying each cluster are randomly assigned and used only in this figure.
