Fig. 6From: Morphological and ecological divergence of Lilium and Nomocharis within the Hengduan Mountains and Qinghai-Tibetan Plateau may result from habitat specialization and hybridizationUltrametric chronograms showing divergence time dating and biogeographic results based on the combined plastid DNA phylogeny. Scale bar at bottom indicating branch length of 2 Mya. Mean divergence age given on nodes. Bars on nodes indicate the 95Â % HPD for divergence ages. Pie charts show probabilities of ancestral area reconstructions, colors of pie slices defined in legend. The bottom chart summarized the biogeographic event through time. The Sinomartagon I clade was highlighted for its conflict position compared to the ITS result in Additional file 1: Figure S1Back to article page