This PhD project aims to investigate the systematics and evolutionary history of Machaerium and the pantropical Dalbergia lineage (Leguminosae). Using phylogenomics and morphology, it aims to resolve taxonomic uncertainties, and propose a new phylogenetic classification within this lineage. A key objective is to visit the United States National Herbarium to examine historical collections studied by Dr. Velva Rudd, a remarkable specialist in this group, integrating her foundational work with modern sequencing techniques.