Bryophytes of Serra da Capivara National Park, Piauí, Brazil

Most studies of bryophytes in Brazil have focused on the Atlantic and Amazon forests, leaving the Caatinga as the biome least bryologically studied in the country. A bryofloristic survey of Serra da Capivara National Park was undertaken to analyze species richness, the distribution of species among Brazilian biomes, and the geographic distribution of species. A total of 450 samples of 62 species were collected, representing 48 mosses, 13 hepatics, and one hornwort. The resulting species list includes 22 new records for the Caatinga, 34 new records for the state of Piauí, and two for the Northeast Region of Brazil. About 60% (37 spp.) of the species have broad distributions in Brazil while 13 have moderate distributions and 12 are considered restricted. The results reinforce the importance of floristic inventories in Brazil and the maintenance of Parque Nacional da Serra da Capivara as an area for the conservation of bryophytes

Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranhão, Brazil

Chapada das Mesas National Park is located in southwestern Maranhão state, Brazil and comprises several forest types characteristic of the Brazilian Cerrado. We contribute to the knowledge of the distribution of Brazilian bryoflora and provide a list of moss species of Chapada das Mesas National Park. A total of 38 species of acrocarpic mosses were found, with Fissidentaceae being the richest family with 11 species. Of the species recorded, 22 are new occurrences for the state of Maranhão, and 4 of these are new records for the Northeast Region of Brazil. Most of the species recorded are broadly distributed in Brazil (66%), while restricted species represented just 10%. The most common acrocarpic moss species were Hyophila involuta (Hook.) A. Jaeger and Octoblepharum albidum Hedw.&nbsp

Pleurocarpous and cladocarpous mosses (Bryophyta) of Parque Nacional da Chapada das Mesas, with newly recorded species from Maranhão and the northeast region of Brazil

Located in southwestern Maranhão, the Parque Nacional da Chapada das Mesas (PNCM), with an extent of about 160,046 ha, is completely inserted in the Cerrado phytogeographic domain. The topography is characterized by a plateau formation consisting of steep hills and medium-altitude mountains with flat tops, which give the PNCM its name. We present an annotated checklist of the mosses that occur in the PNCM. Our checklist includes 26 species of pleurocarpous mosses distributed in 10 families and 22 genera and two species of cladocarpous mosses of the family Orthotrichaceae. The most species-rich families of pleurocarpous mosses were Sematophyllaceae (7 spp.), Pylaisiadelphaceae (6 spp.), and Stereophyllaceae (4 spp.). Eleven species are recorded for the first time from Maranhão and three species are recorded for the first time in the northeast region of Brazil. Taxithelium pluripunctatum (Renauld & Cardot) W.R. Buck and Trichosteleum glaziovii (Hampe) W.R. Buck, are recorded for the first time from Maranhão and the Cerrado phytogeographic domain. Our results expand the knowledge of the Brazilian bryoflora and add distribution data for a number of species in Maranhão and the northeast region

New records of Passiflora L. (Passifloraceae) species from Maranhão state and northeastern Brazil

We present here new records of Passiflora (Passifloraceae sensu stricto) species from Maranhão state, Brazil: P. cincinnata Mast., P. picturata Ker Gawl., and P. vespertilio L. This is the first report of occurrence of P. vespertilio tonortheastern Brazil. Our data reinforces the need for more collections in Maranhão, as the great environmental richness of the state is not yet sufficiently studied