Diversity of flowering plants in the Brazilian semiarid: an analysis of floristic and phytosociological studies - Supplementary file

This dataset compiles information on species distribution within the Caatinga Dominion, based on 112 peer-reviewed floristic and phytosociological studies published up to December 2020. The data were organized to identify woody and non-woody species, assess their IUCN conservation status, highlight the most species-rich families, and analyze species distribution across Neotropical biomes, biogeographical districts, and Holdridge life zones. The database includes 1,807 taxa identified at the species level (conservative richness), and a total estimated richness of 3,019 species when including unidentified specimens.The supplementary material includes five tables:Table S1. Literature reporting phytosociological or floristic surveys.Table S2. Areas where floristic and phytosociological surveys were conducted in the Caatinga Dominion.Table S3. Species list including growth form and IUCN conservation status, along with species distribution across Brazilian states, biogeographical districts, Holdridge life zones, and Neotropical biomes.Table S4. This dataset includes species occurrences recorded across all studies, including taxa not identified at the species level.Table S5. Acronyms used to identify sampling sites. Each acronym combines the biogeographical district, the site code, and the Holdridge life zone classification.These data are essential for informing local conservation policies and for supporting biodiversity assessments focused on endemic and threatened species of the Caatinga Dominion.