Table 1.
Essential references for the taxonomic identification of Chaco Legumes.
Fig 1.
Delimitation of the Gran Chaco ecoregion and subregions.
Fig 2.
Distribution patterns of the hypothesized lineages (= Domains) of species from Chaco Ecoregion.
In total we registered 98 genera, 362 species, and 404 specific and infraspecific Legume taxa occurring in the Gran Chaco ecoregion (Tables 3–5, S1 File). The number of endemisms or exclusive taxa for this region sum up to ca. 17% of the total of recorded species and 17% of total infraspecific taxa (Tables 3–6).
Table 2.
Lineages/Distribution patterns comparison with other biographical divisions and ecoregions for the Gran Chaco and adjacent areas.
Table 3.
Checklist of species and infraspecific taxa of Cercidoideae and Detarioideae subfamilies, their distribution in the Gran Chaco, lineage and endemism.
Table 4.
Checklist of species and infraspecific taxa of Caesalpinioideae subfamily, their distribution in Chaco, lineage and endemism.
Table 5.
Checklist of species and infraspecific taxa of Papilionoideae subfamily, their distribution in Gran Chaco, lineage and endemism.
Table 6.
Summary of endemic/typical Leguminosae taxa from Chaco ecoregion.
Fig 3.
Distribution in South America of some endemic and typical species of Legumes from the Gran Chaco.
A. Distribution in South America of some endemic and typical species of Caesalpinioideae subfamily from the Gran Chaco. B. Distribution in South America of some endemic and typical species of Cercidoideae subfamily from the Gran Chaco. C. Distribution in South America of some endemic and typical species of Papilionoideae subfamily from the Gran Chaco.
Fig 4.
Distribution of typical species of the different lineages present in the Gran Chaco Ecoregion.
A) Distribution of typical species of Chaquenian lineage. B) Distribution of typical species of Seasonally Dry Tropical Forests lineage. C) Distribution of typical species of Amazonian lineage–Amazonian and Atlantic rainforests. D) Distribution of typical species of Amazonian lineage–Cerrado. E) Distribution of typical species of Amazonian lineage–Campos. F) Distribution of typical species of Chaquenian/Andean lineage.
Table 7.
Classification of Chaco species according to their lineage.
Table 8.
Classification of Chaco species and infraspecific taxa according to occurrence per subregions.
Table 9.
Endemic and typical specific and infraspecific taxa of Legumes from Gran Chaco per subregion (% over total taxa of each subregion).
Table 10.
Categorization of endemic taxa of Leguminosae in the Gran Chaco ecoregion.