ABSTRACT
The Authors give the first part of the catalogue of the Bryophyta (Musci) of the Jardim Botânico do Rio de Janeiro Herbarium. Seventy three specimens identified by V. F. Brotherus are listed, belonging to the families Bartramiaceae, Brachytheciaceae, Bryaceae, Dricanaceae, Entodontaceae, Ephermeraceae, Erpodiaceae, Fabroniaceae, Funariaceae, Hedwigiaceae, and Hookeriaceae.