In this article the wrong figure appeared as Fig. 1; the figure should have appeared as shown below. (Figure presented.) Heatmap of all weighted least squares (WLS) analyses performed to determine correlations between individual willow traits (see Table 1 for trait abbreviations). Non-significant results are in gray boxes. Green boxes indicate significant positive trends whereas boxes in blue depict significant negative trends. Asterisks in the boxes indicate correlations that were still significant after applying multiple comparison corrections with Hochberg’s step-up method. Traits are color coded based on their correlation to one of the trait syndromes. HS syndrome is in yellow, LS syndrome is in light blue, and M group is in dark blue. See Table S7 for detailed results The original article has been corrected.