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Myrcia is a plant genus exclusive of the Neotropical region and one of the most important components of the tree diversity in the Cerrado and Atlantic Forest domains. However, no mapping of its taxonomic diversity for this region exists. Our aim was to describe the spatial patterns of diversity and biogeographical history for Myrcia in the Neotropical region based on a phylogenetic regionalization.

Neotropics.

Genus Myrcia (Myrtaceae).

We derived distributions for 307 species from occurrence records using buffering and species distribution modelling. We used stacked distributions to generate a richness map of the genus and its clades (sections). In addition, we used phylogenetic regionalization methods to define evolutionary regions (evoregions) and ancestral area reconstruction to reveal the biogeographical history across these evoregions.

We found high species …