Levantamento e tratamento taxonômico de bignoniaceaejuss. no município de Caxias, Maranhão, Brasil

Abstract

BignoniaceaeJuss. It is found predominantly in neotropical regions. In Brazil there are 420 species, of which 212 are endemic and most species occur in the Southeast, North and Northeast. Among thestates in this region with more species records are Bahia, Maranhão and Piauí, however, there is no record ofstudies on the floristic survey of the Bignoniaceaefamily in the state of Maranhão. With this, the work aimed to carry out a floristic survey and taxonomic treatment of the species of Bignoniaceae, in the municipality of Caxias, Maranhão, Brazil. The raised species were described, and from these descriptions an identification key was elaborated for the studied species. Expeditions were carried out for observation, collection and identification of botanical materialin 6points ofthe municipality, which identified12 specimens, distributed in 5 genera and 6 species, with the most representative genus being Tabebuia with two species. However, there was a collection of the species Handroanthusimpetiginosus, which is on a near threatened scale. Based on the data obtained, it is important to state that the city of Caxias - MA, has a considerable diversity of species of Bignoniaceae, with a greater frequency of ipês, as they are widely used for afforestation in the municipality. Finally, the results of the research contributed to the knowledge of the flora of East Maranhão. In addition to serving as a basis for future scientific research of a floristic/taxonomic nature, thus enriching the knowledge of the Bignoniaceae family for the municipality of Caxiasand for the State of Maranhão