The Brazilian Pantanal is composed of eleven sub-regions, one of them the Pantanal of Barão de Melgaço, located northeast of the Quaternary sedimentary basin. Considering that Leguminosae is identified as one of most abundant families in the Pantanal region, this study aimed to present a list of taxa of Leguminosae taxa occurring in the Pantanal of Barão de Melgaço, municipality of Barão de Melgaço, Mato Grosso state. Information about the habit and vegetation type are provided for all the species. A total of 40 táxons were recorded and its belong to 23 genera. Most species are tree and occur primarily in riparian vegetation. This study shows, among the species reported, two new records for the Mato Grosso state, that are: Aeschynomene evenia C. Wright ex Sauvalle and Pterocarpus villosus (Benth.) Benth.
floristic; Fabaceae; riparian vegetation; Aeschynomene; Pterocarpus