Filename: R code Fig 3 correlation plots Short description: R code used to plot correlations between dimensions of commonness and identify outliers (e.g., species with higher than expected abundance, which pose a higher risk of becoming invasive). The output of this code is presented in Figure 3. Filename: R code Fig 5 species area curves R code used to calculate species area curves to estimate total numbers of non-native plant species as well as total numbers of abundant non-native plant species within each U.S. Level III ecoregion. The output of this code is presented in Appendix S5 and visualized in Figure 5.