Abstract
Leucobryaceae is represented by seven species at Parque Nacional da Tijuca, in the State of Rio de Janeiro: Leucobryum albicans (Schwaegr.) Lindb.; Leucobryum clavatum Hampe; Leucobryum crispum C. Muell.; Leucobryum martianum (Hornsch;) Hampe; Leucobryum sordidum Angstr.; Octoblepharum albidum Hedw.; Octoblepharum cocuiense Mitt. About these species are presented descriptions, geographical distribution and illustrations.