A floristic survey of the Poaceae in the Área de Relevante Interesse Ecológico (ARIE) "Santuário de Vida Silvestre do Riacho Fundo", Distrito Federal, Brazil was undertaken. Forty one genera and 107 species were found, including 82 native and 25 introduced species. Keys to genera and species and illustrations are presented. Coelorachis aurita (Steud.) A. Camus is recorded for the first time in the Distrito Federal, Brazil.
Gramineae; species list; new citation; floristics; floristic survey
