Família leguminosae (Juss.) em áreas de condomínios residenciais na cidade de Caxias, Maranhão/Brasil

Abstract

In Maranhão, Leguminosae Juss. is the richest family in number of species (445 sp.), with distribution between Cerrado, Amazon and transition areas. Considering Leguminosae as the richest angiosperm family in Maranhão, it is strongly affected by the anthropic events that the Cerrado Maranhense suffers, mainly from the expansion of civil construction. Thus, the research aims to carry out a floristic study of the family in areas of construction and/or implantation of condominiums in the city of Caxias, in Cerrado Maranhense, contributing to expand the knowledge about the mentioned family, mainly about the distribution of floristic diversity in areas that have already undergone alterations, contributing substantially to the adoption of management and conservation practices. Expeditions were carried out for observation, collection and identificationofmaterialscollectedinconstructionareas ofresidentialcondominiums in Caxias-Maranhão. After the collection, herborization and identification of the collected species, the conservation status,habit, origin, endemism and phytogeographic domains of occurrence of the studied taxonomic groups were analyzed using the Species List of Flora and Funga do Brasil. 34 species, 23 genera and 61 specimens distributed in four subfamilies were catalogued: Caesalpinioideae DC., Papilionoideae DC., Cercidoideae Legume Phylogeny Working Groupand Detarioideae Burmeist., the first cited being the most representative for the study with 19 species, and Mimosa L. the genus with the most species (6 sp.) most of the taxa found have a wide distribution, with six species endemic to Brazil, 30 native and the habit of life with greater predominance was tree. With the accomplishment of the work and the high diversity sampled, it is perceived the need for more studies on the botanical family, forms of management and cultivation of native species, mainly with regard to the elaboration of projects within civil construction aimed at sustainability