Bayesian 50% majority-rule consensus tree of Stachydeae based on combined nuclear (ITS, ETS and 5S-NTS) dataset. Support values ≥ 0.50 PP or 50% BS are displayed above the branches (an “*” indicates a support value = 1.00 PP or 100% BS and a “-” indicates a conflicting node in the BI and ML trees). Species marked in bold represent samples newly sequenced in the present study. Multiple accessions of the same species are numbered according to Appendix 1.