The Bragantine Zone, located east of Belém, between the Guamá River and the coast, covers an area of almost 20,000 square kilometers. It used to be covered by primary terra firme forests, which were totally devastated at the end of the last century by migrants coming from the Northeast of the country, fleeing the drought. The objective of this work is to determine the current brioflora of this area, not yet studied, and, at the same time, to compare it with other primary forest regions in the state of Pará. Collections were done in the municipalities of Vizeu, Ajuruteua, Capitão Poço, Augusto Corrêa and Bragança. The material collected is still being identified but we can highlight the occurrence, in abundance, of Sematophyllaceae, followed by Calymperaceae, Leucobryaceae, Hypnaceae, Hookeriaceae, Thuidiaceae and Neckeraceae. Other families occurred in smaller numbers, such as Fissidentaceae, Pterobryaceae, Plagiotheciaceae, Meteoriaceae, Dicranaceae, Orthotrichaceae, and Bartrarmiaceae. The liverworts group is also quite expressive in the area, with the Lejeuneaceae family being the most prominent (CNPq/Museu Goeldi).
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