Abstract
A checklist for woody Leguminosae in the South American Corridor of Dry Vegetation was based on published data (286 floristic lists) and collections from nine herbaria. A total of 781 species (117 genera and 16 tribes) were found. The Chaco showed highest species richness, despite having the lowest taxonomic distinctness index (∆*). Data from herbaria formed a large contribution to the evaluation of the diversity of the vegetation studied. Each vegetation type has a considerable number of endemic species, demonstrating the importance of conserving all types of seasonally dry vegetation present in South America.