My research and that of my students focuses on phylogenetic systematics, biogeography and evolution. I test hypotheses on the origin and demise of tropical woody plants, on changes in their geographical distribution and ecological preferences, and on the evolution of life history features of these plants.
The group of organisms that I use most to address my research questions, and that I have studied extensively in the field (Neotropics and Africa) and in the herbarium, is the tropical plant family of Annonaceae. I have a long-term commitment to the study of the systematics of this plant familly, including promoting the use of baseline data through publicly available databases.
Current projects focus on the use of high-throughput data for phylogenetics and phylogenomics, especially at the species-level, and on the use of fossil and molecular evidence to estimate the age of lineages.
Through my work for the international conservation treaty CITES, I am devoted to help build an improved science base for conservation. My efforts focus in particular on species of ebony (the genus Diospyros) from Madagascar.