Fig. 5.

Geographic consistency in diversification driven by global cooling. Rate-through-temperature curves (A) of endemic lineages within each orchid bioregion were estimated by fitting exponential models to BAMM-derived speciation rate data covering the last 10 My. The correlation matrix of speciation rate through time curves (B) displays the degree to which diversification happened independently and simultaneously in endemic lineages across the Earth, from strong, +0.52 (light blue), to very strong, +0.99 (dark blue), correlations in each bioregion.