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Fig. S1 A phylogeny of the genera included in the final analysis.

Fig. S2 The mean of the absolute value of latitude for each species in the dataset.

Fig. S3 The relationship of genome size with chromosome number, showing the interaction with latitude.

Table S1 Comparison of phylogenetically informed models predicting genome size from cytogenetic traits (chromosome number and ploidy level) and latitude

Table S2 The relationship of plant invasiveness with genome size (DNA 1C-value) and cytogenetic traits (chromosome number and ploidy level), also considering the linear and quadratic effects of latitude

Table S3 Effect of latitude on genome size (DNA 1C-value), chromosome number and invasiveness

Table S4 Effect of the source of data on invasive species, obtained from GLMMs including genus as a random factor