Levantamento preliminar de briófitas do médio rio madeira, Amazonas

Abstract

Bryophytes are small plants with a relatively simple structure, inhabiting the most diverse substrates, such as rock surfaces, trunk base, living leaves, roofs, among others. They promote great ecological, moreover, present great significance to the environment by urbanization. The present work is a preliminary survey of bryophytes from the middle Rio Madeira region. The methodology used was field collection and later they were presented as identifications with the help of the recommended literature. Of the 82 samples of Bryophytes collected in the region of the middle Rio Madeira, 37 specimens were identified, totaling 24 species, distributed in 15 genera and 11 families. The mosses (Bryophyta) identified were distributed in 18 species. The liverworts (Marchantiophyta) were identified six species. The most representative families were Calymperaceae and Lejeuneaceae. Two species are new records for the State of Amazonas, namely: Campylopus gardneri (Müll.Hal) Mitt. and Campylopus lamellinervis (Müll.Hal.) Mitt. (Dicranaceae Schimp.). Key-words: identification; bryophytes; middle Madeira River.