Fig. 5From: The speciation and adaptation of the polyploids: a case study of the Chinese Isoetes L. diploid-polyploid complexChronogram showing divergence times estimated in BEAST based on chloroplast genome data. Blue bars represent 95% high posterior density for the estimated mean dates. Node labeled R, 1 and 2 is the calibration point (for more details, see Materials and Methods)Back to article page