Fig. 4.

Proportion of strongly or moderately negative correlations between net relatedness index (NRI) and actual evapotranspiration (A), mean temperature of the coldest month (B), or annual precipitation (C). Node refers to all node-based clades above the order level in the family-level phylogeny of the Chinese seed plants (Fig. 3). Individual correlations for node-based clades and orders are presented in Fig. 2 and SI Appendix, Figs. S2 and S3; individual correlations for families are presented in Fig. 3 and SI Appendix, Figs. S7 and S8.