Fig. 2.

Dated phylogeny for Adoxaceae based on a Bayesian analysis of the combined data set. Uncertainty in the tree topology and divergence times are indicated by bars on internal nodes: their length corresponds to the 95% highest posterior density (HPD) of node ages, and their shading reflects the posterior probabilities of nodes (shaded bars, nodal posterior probabilities ≥0.90; open bars, those <0.90). Circles adjacent to the tips are shaded to indicate the observed fruit type in the respective species, and branches of the tree have been shaded to reflect the posterior probability estimates for ancestral states. Numbered internal nodes correspond to the fossil constraints used to estimate divergence times (Table S2) and/or to internal nodes for which the posterior probabilities of the ancestral fruit morphologies were inferred. The inset histograms depict the estimated posterior probabilities of the ancestral trait values for the corresponding labeled nodes, which indicate that single-seeded fruits arose once along the branch subtending Sinadoxa corydalifolia and once along the branch subtending node 2.