Fig. 5.

Estimated correlation between biogeographic dispersal into South America and rates of diversification in Lupinus. Each histogram depicts the predictive distribution of South American species diversity, and the vertical line indicates the observed species diversity, with the corresponding posterior-predictive probability. These results indicate that the Andean clade experienced significantly increased rates of diversification relative to background rates of diversification in Lupinus, whereas the other South American lineage did not.