in the São Francisco River sub-basin, Nova Marilândia, Mato Grosso, Brazil. Biota Neotrop. 13(2): http://www.biotaneotropica.org.br/v13n2/en/abstract?shortcommunication+bn00413022013Abstract: The watershed of the São Francisco River is a large complex of headwaters of the Paraguay River, the main river of the Pantanal Matogrossense. Considering that Fabaceae are pointed out as the main family in floristic composition of various Brazilian biomes, however in some regions of Brazil is still little known upon the taxa, particularly in the Northern part of the Central-West, this study aimed to present a list of taxa occurring in the sub-basin of the São Francisco River, municipality of Nova Marilândia, State of Mato Grosso. For the taxa we give information on habit, vegetation, data on geographic distribution, potential use, successional strategy and dispersal syndrome, to subsidize habitat restoration projects. We recorded a total of 44 taxa, belonging to 25 genera. Inga stood out as the main genus in number of species.

This research consists of the taxonomic-floristic treatment of taxa of Mimosoideae occurring in the Brazilian Chaco. The specimens analyzed were collected from 2004 to 2012 in Chaco remnants located in southwestern Mato Grosso do Sul, Brazil. Mimosoideae is represented by 39 taxa belonging to 14 genera; among the most representative, Mimosa (16 taxa) and Prosopis (4 taxa) are highlighted. Chloroleucon chacoense, Mimosa centurionis and Prosopis alba are new records for the Brazilian Flora. Prosopis nigra has its occurrence expanded. Mimosoideae is the second subfamily in species richness compared with other subfamilies of Leguminosae studied in the Brazilian Chaco. This work includes morphological descriptions, identification keys, illustrations and taxonomic comments.

RESUMO-O checklist das Leguminosae do estado de Mato Grosso do Sul conta com a colaboração de 17 pesquisadores, nove do estado e oito de outras unidades da federação. Em riqueza destacam-se Arachis L. (30 spp.), Desmodium Desv. (25 spp.), Aeschynomene L. (21 spp.), Stylosanthes Sw. (17 spp.) e Crotalaria L. (16 spp.) em Papilionoideae. O gênero Mimosa L. agrega 30 táxons (17 spp., 10 variedades, três subespécies) seguido por Senegalia Raf. (sete spp.) e Calliandra Benth. (cinco spp.) em Mimosoideae. Chamaecrista Moench (22 spp.), Senna Mill. (17 spp.) e Bauhinia L. (15 spp.) detêm o maior número de espécies, em Caesalpinioideae. De modo geral a riqueza da família concentra-se em nove gêneros, com 15-29 espécies, e a maioria está representado por uma a três espécies. Leguminosae, uma das mais representativas da fl ora brasileira, em Mato Grosso do Sul detém expressiva riqueza específi ca com 15% do total de espécies de leguminosas estimadas para o Brasil.