Fig. 1From: Insights into the historical assembly of global dryland floras: the diversification of ZygophyllaceaeChronogram of Zygophyllaceae with ancestral area reconstructions. Color-coded bars at the tips of the tree indicate the contemporary distribution of the corresponding species. Color-coded pie diagrams at each node show the relative probabilities of alternative ancestral distributions obtained by Statistical Dispersal-Vicariance Analysis (S-DIVA) optimizations over the 1000 trees from the BEAST analysis. An example of dryland flora dominated by Zygophyllum xanthoxylum is presented in the upper left. Photograph by S-X YuBack to article page