Fig. 4

BEAST2-derived chronogram of Ranunculales based on matK sequences with calibration points denoted by nodes a-d. The blue bars indicate the 95% HPD credibility intervals for node ages (in Myr ago, Ma). The age estimate (Ma) (mean 95% highest posterior density: HPD) for each node is shown beside the nodes. The posterior probability values are labelled on each branch in turn