Fig. 5

Ancestral area reconstructions for Causonis by BioGeoBEARS using the chronogram based on the 76taxa-50nu dataset. Mean node ages are displayed at the corresponding nodes, and posterior distributions were plotted to represent the 95% highest posterior density confidence interval of divergence times. The pie charts indicate the relative possibilities of ancestral areas estimated. A, continental Asia (including the East Asian monsoon region, Sino-Himalaya, and Indochina); B, the Indian subcontinent; C, the Malesian region (excluding New Guinea); and D, Australasia (including continental Australia and New Guinea). The red line represents the global temperature changes (adapted from Westerhold et al. [50]). For concision, outgroup except for Tetrastigma and Pseudocayratia are not shown. Ma, million years ago