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Fig. S1 Phylogeny of the 90 sampled species.

Fig. S2 Comparison of bark traits across sites.

Table S1 Family, order, height, and locality information for the 90 sampled species

Table S2 Pearson correlations among bark, wood, and leaf traits

Table S3 Principal component analyses of bark and wood traits

Table S4 Trait comparison between photosynthetic and nonphotosynthetic bark

Table S5 Estimates for variance across sites, within sites, and within species