Summary
Nineteen species and one variety of Leucobryaceae are reported from the Brazilian Amazonian region, distributed in three genera: Leucobryum Hampe with six species, Octoblepharum Hedw. with ten species and one variety and Ochrobryum Mitt, with three species. The following species are reported for the first time for the region: Leucobryum albidum (P. Beauv.) Lindb., L. bowringii Mitt., L. giganteum C. Muell., L. juniperoideum (Brid.) C. Muell., Octoblepharum albidum var. violascens C. Muell., O. africanum (Broth.) Card., O. erectifolium Mitt, ex Williams, O. rhaphidostegium C. Muell. ex Broth, and Ochrobryum obtusifolium (C. Muell.) Mitt. Leucobryum martianum (Hornsch.) Hampe, Octoblepharum pulvinatum (Dozy et Molk.) Mitt, and O. albidum Hedw. are the commonest species.