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Figure 1 | BMC Evolutionary Biology

Figure 1

From: A Southern Hemisphere origin for campanulid angiosperms, with traces of the break-up of Gondwana

Figure 1

Divergence time estimates (X-axis, in millions of years) and biogeographic reconstructions for a two-area model for Campanulidae that broadly grouped terminals as occurring in the Northern Hemisphere, the Southern Hemisphere, or both. The Northern Hemisphere (yellow) included the Holarctic and Southeast Asia. The Southern Hemisphere (dark blue) corresponded to the historically persistent Gondwanan landmasses (e.g. South America, Australasia, Africa, and Madagascar). The ancestral range shown at each internal node (colored boxes) are the reconstructed scenarios with the highest composite Akaike weight were obtained from analyses conducted on 1000 randomly chosen trees from the posterior distribution of dated phylogenies. The three barplots show the three biogeographic scenarios with the highest composite Akaike weight (w i ) for the origin of Campanulidae, Apiidae, and Dipsapiidae. Para = Paracyphiaceae; Brun. = Bruniales; Escallon. = Escalloniaceae.

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