Fig. 9

Divergence time estimation of Costaceae species based on nucleotide sequences of 75 single-copy protein-coding genes shared in 22 chloroplast genomes of Costaceae. The fossil and calibration taxa are indicated with red points on the corresponding nodes. Mean divergence time of the nodes are shown at the nodes with blue. The numbers inside each blue bracket after mean divergence time represent 95% highest posterior density (HPD) of estimated divergence time, with minimum and maximum values, respectively. The species in bold are sequenced in this study