Abstract
The Amazon is an important endemism center for the bryophytes, and Brioflora knowledge of this biome is still limited in the region of Alto Solimoes, due to some factors such as the difficulty of access to the most remote locations of large urban centers and the scarcity of scholars. This work aimed at the morphological characterization of bryophytes in the municipality of Benjamin Constant-AM. The methods used were according to the techniques described by Yano (1984) and Lisboa (1993) the collections occurred at a site of 26 ha, located in BR-307 that connects the municipality of Benjamin Constant to Atalaia do Norte. In January, 2017, twenty-two samples were collected and analyzed using a magnifying glass and binocular microscope at the Laboratory of Microbiology of the Institute of Nature and Culture, which resulted in the identification of nineteen species among mosses and hepatics. These species are divided in five orders (Dicranales, Rhizogoniles, Porellales, Pottiales, Jungermanniales) and eight families, (Calymperaceae, Calypogeiaceae, Lejeuneaceae, Lepizociaceae, Rhizogoniaceae, Pottiaceae, Racopilaceae, Plagiochilaceae). The most frequent family of the phyllo Bryophyta was the Calymperaceae with six occurrences; of the phylum Marchantiophyta was the Plagiochilaceae with two occurrences. Were also characterized in relation to the arrangement and morphology of the filids. It should be noted that the morphological characterization of bryophytes shows that the studies that focus on the Brioflora are important for the knowledge of the local richness, being the first floristic survey of the municipality of Benjamin Constant. Keywords: Brioflora; Amazon; substrates.
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