Inventory of grasses in Cerrado areas impacted by farming, Mato Grosso do Sul, Brazil

Resumo

A floristic survey of grasses (Poaceae) in grassland, savanna and forest formations of Mato Grosso do Sul is presented. Field collections were performed from August 2007 through July 2008. We found 28 genera and 45 species of Poaceae, of which 27 are native and 18 exotic. The subfamily Panicoideae had the highest number of species (33). Setaria parviflora (Poir.) Kerguélen was found in all areas sampled. Sown pastures were the most species-rich (24). A checklist of the species recorded, with data on origin, life cycle, forage potential and habitat recorded from field observations is presented. An identification key is given, to support taxonomic and ecological studies.