The present work consists of a taxonomic synopsis of the genera of the family Lauraceae in the Rio de Janeiro State, Brazil. It was verified the occurrence of about 109 species of 16 genera: Aniba Aubl., Aiouea Aubl., Beilschmiedia Nees, Cassytha L., Cinnamomum Schaeff., Cryptocarya R. Br., Endlicheria Nees, Licaria Aubl., Mezilaurus Kuntze ex Taub., Nectandra Rol. ex Rottb., Ocotea Aubl., Persea Mill., Phyllostemonodaphne Kosterm., Pleurothyrium Nees, Rhodostemonodaphne Rohwer & Kubitzki, Urbanodendron Mez. A key was elaborated for identification of genera, and also descriptions and comments on each one of them, with geographical distribution, number of species in Brazil and in the Rio de Janeiro State, and a preliminary list of the species that occur in the State.
taxonomy; synopsis; Lauraceae; Rio de Janeiro State; Brazil