Estimated branch lengths for combined 3 mt gene phylogenetic analysis. Single best tree from Fig. 1 with branch lengths estimated from ML analysis of combined atp1 + coxI + matR mtDNA sequence data (-lnL = 43115.38). Green branches are non-parasitic, orange branches are mostly hemiparasitic, and red branches are holoparasitic lineages. Some parasites have long estimated branch lengths for these 3 combined genes; however, even some non-parasites, like Scaevola, have long branch lengths as well. ML bootstrap support values (BP) are shown above all nodes with values >50.