Fig. 3.

Estimated correlation of fruit morphology with diversification rates in Adoxaceae. The graphs summarize the inferred correlation between diversification rate and the two instances of single-seeded fruits: each histogram depicts the predictive distribution of single-seeded species diversity, and the vertical line indicates the observed species diversity, with the corresponding posterior-predictive probability. These tests indicate that single-seeded fruits are correlated with significantly increased rates of diversification in Viburnum relative to background rates of diversification in Adoxaceae, but not in Sinadoxa corydalifolia.