Results of PhyML analyses with test sequence data.

1See Methods and Supporting Information Lists S1 and S2. OG, outgroup; CAb, CAbMV cCP sequences; PRS, PRSV cCP sequences.2Mid-tree divergence (nucleotide substitutions/site). The mean pairwise difference of cCP sequences linked through the midpoint of the tree.3Outgroup divergence (nucleotide substitutions/site). The mean pairwise difference between the outgroup cCP sequences and every American CAbMV or PRSV cCP sequence.4Species divergence (nucleotide substitutions/site). The mean pairwise difference of sequences linked through the basal nodes of the clusters of the American CAbMV (rows b and d) or the PRSV (rows c and e) cCP sequences.5NA, not applicable.