e-Flora of Malvaceae Juss. of Rio Grande do Norte
Malvaceae, Florística, Taxonomia, Cienciometria, Biodiversidade, Rio Grande do Norte, Nordeste do Brasil.
Malvaceae sensu lato is a cosmopolitan plant family comprising approximately 243 genera and 4,300 species, with major centers of diversity in the Americas and Africa. The family is monophyletic and characterized by an extrafloral nectary formed by glandular trichomes at the base of the calyx. With the inclusion of former Malvales families such as Bombacaceae, Sterculiaceae, and Tiliaceae, Malvaceae is currently divided into nine subfamilies. It includes ecologically and economically important species such as Gossypium L., Theobroma L., Adansonia L., and Hibiscus L., and plays a significant role in tropical ecosystems. In Brazil, Malvaceae is among the richest botanical families, with 872 species across 81 genera. However, its diversity remains underestimated in several regions, including Rio Grande do Norte (RN), a northeastern state historically underrepresented in floristic inventories. Recent studies suggest that the diversity of Malvaceae in RN may be significantly higher than current databases indicate, underscoring the need for updated regional treatments. Additionally, scientific production on Malvaceae is mostly concentrated in southeastern Brazil and in the Global North, revealing geographic and thematic gaps. This dissertation integrates two complementary approaches: (1) a floristic study of Malvaceae in the state of Rio Grande do Norte, based on herbarium specimen analysis, morphological descriptions, and species records; and (2) a scientometric analysis of global scientific output on Malvaceae, focusing on collaboration patterns, geographic gaps, and publication trends, including a case study from northeastern Brazil. The combined findings contribute to advancing knowledge of Malvaceae diversity and provide valuable insights for conservation, taxonomy, biogeography, and the strengthening of botanical research in underrepresented regions.