Supplementary Figure 1. Bayesian consensus tree of 545 accessions, with statistical support for all nodes. Posterior probabilities above line, likelihood bootstraps below line. C 4 taxa indicated by red branches.
Supplementary Figure 2. Bayesian consensus tree of 545 accessions with major clades collapsed. Red clades are C4 taxa, black are C3 taxa, and yellow indicates mixed C3/C4 lineages. Posterior probabilities above line, likelihood bootstraps below line.