A subfamília caesalpinioideae DC. (FABACEAE LINDL.) na mata atlântica da Paraíba

Abstract

Caesalpinioideae, with 148 genera and approximately 4,400 species, is one of the major representatives of the Fabaceae Lindl family. This subfamily stands out in South America, Tropical Africa and Southeast Asia with species of great economic importance when considering its use for medicinal purposes. Considering works of floristic surveys for species that make up this subfamily within the Atlantic Forest is extremely important, considering its advanced state of deterioration, to have floristic knowledge of the region and thus constitute accessible databases for knowledge of such species. The scarcity of data for this line of research within the Mata do Buraquinho establishes the need for works like this for knowledge of Paraibana flora. Given this need, this work was performed and, from data obtained from collections and materials examined from the botanical collection deposited in the JPB Herbarium, a survey of nine genera and twenty-two species that make up the Caesalpinioideae subfamily was obtained: Cassia fistula, C. grandis, Cenostigma pluviosum, C. nordestinum, Chamaecrista flexuosa, C. nictitans, C. ramosa, C. serpens, Libidibia ferrea, Paubrasilia echinata, Pterogyne nitens, Peltophorum dubium, Senna alata, S. georgica, S. obtusifolia, S. occidentalis, S. pendula, S. pinheiroi, S. quinquangulata, S. siamea, and S. uniflora and Tachigali densiflora. From the material examined were made descriptions of the species, built an identification key and made boards of the collected specimens for illustration, which will later be added to the JPB Herbarium. With this, the objective of expanding the floristic data of species of the subfamily Caesalpinioideae present in the Buraquinho forest was achieved, resulting in the enrichment of material from the JPB Herbarium and, consequently, in updated data amplitude of the Paraibana flora.