taxonID	type	description	language	source
038E87C199545F2F04DFEC64FD2F749B.taxon	description	Trees, branches tomentose, inermous. Nectary petiolar, sessile. Stipules caducous. Leaves bipinnate, paripinnate, 12 – 18 – foliolate, leaflets opposite, oblong, venation actinodromous, translucent punctuation absent. Inflorescence glomerule, axillary. Sessile, actinomorphic, diplostemone flowers; calamus gamossépalo, sepals 5, corolla gamosepalous, tubular, white, petals 5; androecium monadelphous, stamens homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane – corrugate, margin straight, glabrous, epicarp ferruginous. Seeds oblong, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2F04DFEC64FD2F749B.taxon	materials_examined	Examined material:: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 17 December 2018, fl., Aureliana Gomes 2020 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2F04DFEC64FD2F749B.taxon	distribution	Distribution and ecology: — The species occurs in Paraguay, Peru and Brazil (INCT: — Virtual Herbarium of Flora and Fungi), where it is distributed in the Northeast, Central-West, Southeast and South regions in the phytogeographic domains of the Caatinga, Cerrado and Atlantic Rainforest (Flora do Brasil 2020; Queiroz 2009). Phenology: — Found with flowers in December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2F04DFEC64FD2F749B.taxon	discussion	Taxonomic discussion: — Albizia polycephala can be recognized, mainly, by the arboreous habit, inermous branches, bipinnate paripinnate leaves, inflorescence in heteromorphic glomerule, monadelphous androecium and by the legume fruit with oblong and brown seeds.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2F04DFEAECFE3E772F.taxon	description	Trees, branches glabrous, aculeate. Nectary petiolar, sessile. Stipules caducous. Leaves bipinnate, paripinnate, 24 – 26 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescences glomerule, axillary. Flowers sessile, actinomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla gamopetalous, tubular, white, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, stipitate, pluriovulate. Fruit follicle, stipulate, linear, plane, margin constricted, epicarp glabrous, black. Seeds orbicular, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2F04DFEAECFE3E772F.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 04 November 2019, fl., Aureliana Gomes 86935 (UFP).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2F04DFEAECFE3E772F.taxon	distribution	Distribution and ecology: — The species occurs in Argentina, Bolivia, Ecuador, Paraguay, Peru and Brazil (INCT – virtual Herbarium of Flora and Fungi 2020), where it can be found in the Northeast, Central-West, Southeast and South regions in the Caatinga domains, to which shows strongly adapted, and in the fields of Cerrado and Atlantic Rainforest (Flora do Brasil 2020; Queiroz 2009). Phenology: — Found with flowers in November.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2F04DFEAECFE3E772F.taxon	discussion	Taxonomic discussion: — Anadenanthera colubrina can be recognized, principally, by the arboreous habit with presence of aculeous in tronck, 24 – 26 pairs of leaflets inflorescence in axillary glomerule, by follicle-type fruits and orbicular seeds, plane.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2C04DFE9B8FC8072D9.taxon	description	Climbing, branches scabrous, inermous. Nectary absent. Stipules lateral, narrowly – triangular. Leaves imparipinnate, 3 – foliolate, leaflets opposite, ovate, venation actinodromous, translucid punctuation absent. Inflorescence raceme, axillary. Flowers pedicellate, asymmetrical, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, lilac, petals 5; androecium diadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, cylindrical, margin straight, epicarp scabrous. Seeds reniform, cylindrical, coat gray, hilum central.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2C04DFE9B8FC8072D9.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 22 February 2019, fl. & fr., Aureliana Gomes 3014 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2C04DFE9B8FC8072D9.taxon	distribution	Distribution and ecology: — It is distributed in the Neotropical region; in Brazil, it can be found in the North (AM, PA, RO), Northeast (BA, PB), Central-West (DF, GP, MS, MT), Southeast (MG, SP) and South (PA, RS) regions, in the domains of the Amazon, Caatinga, Cerrado, Atlantic Rainforest and Pantanal (BFG 2018; Rodrigues et al. 2020). Phenology: — Registered with flowers and fruits in February.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199545F2C04DFE9B8FC8072D9.taxon	discussion	Taxonomic discussion: — Ancistrotropis peduncularis can be recognized, mainly, by the vine habit, scabrous branches, trifoliolate, opposite leaflets and lilac corolla. It has similarities with the species of Macroptilium due to the shape of the leaflets, but they are distinguished by the colors of the petals being Ancistrotropis lilac and scabrous branches versus red and tomentose branches in Macroptilium.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199575F2C04DFECABFCF67540.taxon	description	Herbs, branches pilose, inermous. Nectary absent. Stipules lateral, lanceolate, adnate to the petiole. Leaves paripinnate, 4 – foliolate, leaflets opposite, obovate, venation brochidodromous, translucid punctuation absent. Inflorescence spikes, axillary. Flowers sessile flowers, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, yellow, petals 5; androecium monadelphous, homodinamous, anthers longitudinal; ovary superior, sessile, pauciovulate. Fruit loment, stipitate, elliptic, cylindrical, margin straight, epicarp glabrous, yellow. Seeds ovoid, turgid, coat yellow, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199575F2C04DFECABFCF67540.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1197 m elev., 14 August 2019, fl. & fr., Aureliana Gomes 3004 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199575F2C04DFECABFCF67540.taxon	distribution	Distribution and ecology: — The species is endemic to Brazil, more precisely from the Caatinga domains and can also be found in the Cerrado and Atlantic Rainforest (Córdula et al. 2008), with records in the Northeast (AL, BA, CE, MA, PB, PE, PI, RN, SE) and Central-West (GO) (Flora of Brazil 2020). Phenology: — Registered with flowers and fruits in August.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199575F2C04DFECABFCF67540.taxon	discussion	Taxonomic discussion: — Arachis dardanii can be recognized by the herbaceous habit, stipule adnate with petiole, 4 - foliolate leaflets, axillary spike inflorescence, sessile flower, yellow papilionaceous corolla, and the yellow loment fruit. This species is popularly known as amendoim de carcará.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199575F2C04DFEB53FC8B7794.taxon	description	Trees, branches tomentulous, inermous. Nectary leaflet, sessile. Stipules caducous. Leaves imparipinnate, 1 – foliolate, bilobed leaflets, venation actinodromous, translucid punctuation absent. Inflorescence raceme, terminal. Flowers pedicellate, zygomorphic, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, whitish, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, stipitate, pluriovulate. Fruit legume, stipitate, linear, plane, margin straight, epicarp tomentose, brown. Seeds oblong, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199575F2C04DFEB53FC8B7794.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 13 May 2019, fl. & fr., Aureliana Gomes 86995 (UFP); 13 December 2019, fl., Aureliana Gomes 2099 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199575F2C04DFEB53FC8B7794.taxon	distribution	Distribution and ecology: — The species occurs in Bolivia, Paraguay and Brazil, where it is registered in the Northeast (AL, BA, CE, MA, PB, PE, PI, RN, SE), Central-West (MS, MG) and Southeast (MG, SP) (INCT-Virtual Herbarium of Flora and Fungi; Flora of Brazil 2020). Bauhinia cheilantha can be found in the arboreal or shrub Caatinga domains, seasonal forest, refuge areas, anthropized environments, as well as in Cerrado areas (Vaz & Tozzi 2003). Phenology: Registered with flowers and fruits in May and flower in December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199575F2C04DFEB53FC8B7794.taxon	discussion	Taxonomic discussion: — Bauhinia cheilantha is characterized, mainly, by the arboreous habit, unifoliolate compound leaves, lobate, similar to a cow’s leg, actinodromous venation, inflorescence in terminal raceme, and legume fruit with ligneous valves. Commonly known “ pata de vaca ”.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2304DFEE8FFC7B72AC.taxon	description	Shrubs, branches tomentose, inermous. Nectary absent. Stipules lateral, triangular. Leaves bipinnate, paripinnate, 3 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence raceme, axillary. Flowers pedicellate, actinomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla gamopetalous, tubular, rose, petals 5; androecium monadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp glabrous, brown. Seeds not observed.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2304DFEE8FFC7B72AC.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.197 m elev., 17 December 2019, fl., Aureliana Gomes 2021 (HACAM); 14 August 2019, fl., Aureliana Gomes 2060 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2304DFEE8FFC7B72AC.taxon	distribution	Distribution and ecology: — The species is endemic to Brazil, found in the Northeast region (PE, BA), in the Caatinga and Atlantic Rainforest domains (Flora do Brasil 2020). This species was found recently by (Gomes et al. 2020) to Paríba state. Phenology: — Registered with flowers in August and December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2304DFEE8FFC7B72AC.taxon	discussion	Taxonomic discussion: — Calliandra subspicata can be recognized, mainly, by the shrub habit, raceme inflorescences, monadelphous androecium, bipinnate leaves, legume with straight margin. Morphologically, it is distinguished from all other species found in the area, sharing with some the presence of bipinnate leaves and flowers with monadelphous androecium, feature of the species of the Ingeae tribe.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2304DFED36FD4C75F0.taxon	description	Vines, branches tomentulous, inermous. Nectary absent. Stipules lateral, triangular. Leaves imparipinnate, 3 – foliolate, leaflets opposite, ovate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, axillary. Flowers pedicellate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 4, corolla dialypetalous, papilionaceous, rose, petals 5; androecium diadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp glabrous, brown. Seeds elliptic, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2304DFED36FD4C75F0.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m evel., 02 December 2019, fl. & fr., Aureliana Gomes 3169 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2304DFED36FD4C75F0.taxon	distribution	Distribution and ecology: — The species has a neotropical distribution, in Brazil it is present in the five regions, with wide distribution in the Northeast region. It occurs in the domains of the Amazon, Caatinga, Cerrado and Atlantic Rainforest, and is present in coastal areas, dunes and wetlands (Córdula et al. 2008, INCT - Virtual Herbarium of Flora and Fungi). Phenology: — Registered with flowers and fruits in December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2304DFED36FD4C75F0.taxon	discussion	Taxonomic discussion: — Canavalia brasiliensis can be recognized by the vine habit, lateral stipules, inflorescences in axillary racemes, by the flowers with gamosepalous calyx, 4 sepals, pink papilionaceous corolla with 5 petals and fruits in legumes with winged streaks on their margins.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2004DFEBC3FB827154.taxon	description	Vines, branches glabrous, inermous. Nectary absent. Stipules lateral, triangular. Leaves imparipinnate, 3 – foliolate, opposite, lanceolate, venation brochidodromous, translucid punctuation absent absent. Inflorescence raceme, axillary. Flowers pedicellate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, violet, petals 5; androecium diadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp glabrous, whitish. Seeds reniform, plane, coat marbled, hilum central.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2004DFEBC3FB827154.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 14 October 2019, fl. & fr., Aureliana Gomes 3126; (HACAM); 22 December 2019, fl. & fr., Aureliana Gomes 3166 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2004DFEBC3FB827154.taxon	distribution	Distribution and ecology: — The species is invasive, found in all regions of Brazil, also widely distributed in the Northeast region (AL, BA, CE, MA, PB, PE, PI, RN, SE) (BFG 2018). It is associated with the Amazon, Caatinga, Cerrado and Atlantic Rainforest domains, and can be found in disturbed environments, roadsides and highway margins (Kill et al. 2000). Phenology: — Registered with flowers and fruits at October and December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199585F2004DFEBC3FB827154.taxon	discussion	Taxonomic discussion: — Centrosema brasilianum can be recognized by the vine habit, imparipinnate leaves, raceme axillary inflorescence, mainly by the pedicellated flowers, with 5 violet petals, glabrous, inermous branches. Centrosema presented two species in the study area, being that C. brasilianum is trifoliolate with lanceolate leaflets versus unifoliolate leaflets, sagitate in C. sagittatum. Next the study area in Cariri paraibano was found four speceis of Centrosema and C. brasilianum was more comum in all enviroments (Queiroz 2021)	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2004DFEF3FFB2173F8.taxon	description	Vines, branches glabrous, inermous. Nectary absent. Stipules lateral, triangular. Leaves imparipinnate, 1 – 3 – foliolate, opposite, sagittate, venation brochidodromous, translucid punctuation absent absent. Inflorescence raceme, axillary. Flowers pedicellate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, whitish, petals 5; androecium diadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp glabrous, whitish. Seeds reniform, plane, coat marbled, hilum central.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2004DFEF3FFB2173F8.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 900 m elev., 13 May 2019, fl., Aureliana Gomes 2096 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2004DFEF3FFB2173F8.taxon	distribution	Distribution and ecology: — The species has distribution in South America, among secondary vegetation (Lima & Mansano 2011). In Brazil, it is present in the Central-West, Northeast, Southeast and South regions in the phytogeographic domains of Caatinga, Cerrado, Atlantic Rainforest and Pantanal, in rocky fields, seasonal semideciduous forest, rain forest and in sandbank areas (INCT - Virtual Herbarium of Flora and Fungi). This species occurs preferably in the undergrowth of the forest (Queiroz 2021). Phenology: — Found with flowers in May.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2004DFEF3FFB2173F8.taxon	discussion	Centrosema sagittatum can be easily recognized, mainly, by the vine habit, 1 – 3 foliolate imparipinnate leaves, opposite, sagittate leaflets, dialypetalous corolla, papilionaceous, whitish and reniform seeds.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2004DFEDCBFBF4760D.taxon	description	Subshrubs, branches pilose, inermous. Nectary petiolar, sessile. Stipules lateral, narrow-triangular. Leaves paripinnate, 30 – 32 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent absent. Inflorescence cymose, axillary. Flowers pedicellate, asymmetric, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, yellow, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp glabrous, brown. Seeds trapezoid, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2004DFEDCBFBF4760D.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 05 October 2018, fl. & fr., Aureliana Gomes 49 (JPB).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2004DFEDCBFBF4760D.taxon	distribution	Distribution and ecology: — The species is polymorphic found in all regions of Brazil, in the phytogeographic domains of the Amazon, Caatinga, Cerrado, Atlantic Rainforest and Pantanal, in rocky environments, seasonal forests and highland swamps (Escobar 2014; Flora do Brasil 2020). Phenology: — Registered with flowers and fruits in October.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2004DFEDCBFBF4760D.taxon	discussion	Taxonomic discussion: — Chamaecrista nictitans can be recognized by the subshrub habit, pilose branches, axillary cymose inflorescence and sessile legume fruit. This genus had four species, Chamaecrista nictitans morphologically more similar to Chamaecrista repens by multi-leaf leaves, but they are distinguished by sessile nectary and 30 – 32 – leaflet leaves in C. nictitns vs. stipulate nectary and 20 – 22 – leaflet leaves in C. repens.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2104DFE897FC0F711C.taxon	description	Subshrubs, branches pilose, inermous. Nectary petiolar, stipitate. Stipules lateral stipules, narrow – triangular. Leaves paripinnate, 20 – 22 – foliolate, leaflets opposite, obovate, venation actinodromous, translucid punctuation absent. Inflorescence cymose, axillary. Flowers pedicellate, asymmetric, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, violet, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp glabrous, brown. Seeds trapezoid, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2104DFE897FC0F711C.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 13 May 2019, fl., Aureliana Gomes 3011 (HACAM); 14 October 2019, fl. & fr., Aureliana Gomes 87227 (UFP).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2104DFE897FC0F711C.taxon	distribution	Distribution and ecology: — The species occurs in all regions of Brazil, mainly in the Northeast region (AL, BA, CE, MA, PB, PE, PI, SE), associated with the Amazon, Caatinga, Cerrado and Atlantic Rainforest domains in mountain, coastal and depression (Flora do Brasil 2020). It is also distributed in Paraguay, Uruguay, Argentina and Bolivia (Camargo & Miotto 2004). In the study area, it was collected at the base of the outcrop, at 800 m. Phenology — Registered with flowers in may and flowers and fruits in October.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995B5F2104DFE897FC0F711C.taxon	discussion	Taxonomic discussion: — Chamaecrista repens can be recognized, mainly, by the subshrub habit, pilose branches, 20 – 22 – leaflet leaves, asymmetrical pedicel flowers, with 5 violet petals.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2104DFEF67FC9873F8.taxon	description	Herbs, branches pilose, inermous. Nectary absent. Stipules lateral stipules, ovate. Leaves paripinnate, 2 – foliolate, leaflets opposite, obovate, venation actinodromous, translucid punctuation absent. Inflorescence cymose, axillary. Flowers pedicellate, asymmetric, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, yellow, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp glabrous, brown. Seeds trapezoid, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2104DFEF67FC9873F8.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 13 May 2019, fl. & fr., Aureliana Gomes 2098 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2104DFEF67FC9873F8.taxon	distribution	Distribution and ecology: — The species occurs from the western United States of America to Uruguay, has records in the five regions of Brazil in all its phytogeographic domains (Flora do Brasil 2020), associated with open and anthropogenic environments with invasive plant behavior (Queiroz; Loiola, 2009; Dantas; Silva, 2013, Souto et al. 2019). Phenology: — Registered with flowers and fruits in May.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2104DFEF67FC9873F8.taxon	discussion	Taxonomic discussion: — Chamaecrista rotundifolia can be recognized by the absence of nectary, bifoliolate leaves, asymmetrical pedicel flowers, dialypetalous corolla.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2104DFEDCBFCC3760C.taxon	description	Shrubs, branches glabrous, inermous. Nectary absent. Stipules caducous. Leaves paripinnate, 4 – foliolate, leaflets opposite, obovate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, terminal. Flowers pedicellate, asymmetric, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, violet, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp glabrous, brown. Seeds obovate, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2104DFEDCBFCC3760C.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 17 December 2018, fl., Aureliana Gomes 2019 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2104DFEDCBFCC3760C.taxon	distribution	Distribution and ecology: — The species has disjunct distribution, with records in Mexico, Central America, Guyana, Venezuela and eastern Brazil where it is registered in the Northeast and Southeast regions related to the Caatinga, Cerrado and Atlantic Rainforest biomes (INCT - Virtual Herbarium of Flora and Fungi; Queiroz 2009). Phenology: — Registered with flowers in December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2104DFEDCBFCC3760C.taxon	discussion	Taxonomic discussion: — Chamaecrista zygophylloides can be recognized, mainly, by the shrub habit, 4 – leaflet leaves, racemous inflorescence, terminal and asymmetrical pedicel flowers. In the study area, it is among the tetrafoliolate species, characteristic in Chamaecrista exclusive of this among similar species. The tetrafoliolate leaves were also observed in Arachis dardanii and in Senna species. However, Chamaecrista zygophylloides differs from other species with tetrafoliolate leaves by the presence of bracteole.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2604DFE897FB6D711C.taxon	description	Subshrubs, branches pilose, inermous. Nectary absent. Stipules lateral, narrow – triangular. Leaves imparipinnate, 3 – foliolate, leaflets opposite, oblanceolate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, terminal. Flowers pedicellate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, yellow, petals 5; androecium monadelphous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp tomentulose, brown. Seeds reniform, plane, coat brown, hilum central.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2604DFE897FB6D711C.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.197 m elev., 14 April 2019, fl. & fr., Aureliana Gomes 3051 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2604DFE897FB6D711C.taxon	distribution	Distribution and ecology: — The species occurs in Mexico, Panama, Colombia, Venezuela, Paraguay and Brazil, where it can be found in the Central-West (DF, GO), Northeast (BA, CE, PA, PE), Southeast (MG, RJ, SP) and South (PR, SC) associated with the domains of Caatinga, Cerrado and Atlantic Rainforest (BFG 2018; INCT - Virtual Herbarium of Flora and Fungi). In the study area, it was collected on the outcrop plateau at 1197 m, in litolic soil. Phenology: — Registered with flowers and fruits in April.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995A5F2604DFE897FB6D711C.taxon	discussion	Crotalaria vitellina can be recognized, mainly, by the subshrub habit, trifoliolate and palmate leaves, raceme inflorescence and yellow corolla. In the study area, it was the only one to present inflated legume.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2604DFEF67FAAE73A0.taxon	description	Trees, branches glabrescent, inermous. Nectary petiolar, sessile. Stipules caducous. Leaves bipinnate, paripinnate, 8 – 12 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence glomerule, axillary. Flowers sessile, actinomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla gamopetalous, tubular, whitish, petals 5; androecium monadelphous, homodinamous, anthers longitudinal; ovary superior, sessile, pauciovulate. Fruit samara, sessile, linear, plane, margin straight, epicarp glabrous, black. Seeds oblong, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2604DFEF67FAAE73A0.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 02 December 2019, fl. & fr., Aureliana Gomes 509 (JPB).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2604DFEF67FAAE73A0.taxon	distribution	Distribution and ecology: — It is distributed in Argentina, Bolivia, Paraguay, Uruguay and Brazil, where it has records in the Central-West, South and Southeast regions and, mainly, in the Northeast region (BA, CE, PB, PE, PI and RN) in the phytogeographies domains of the Caatinga, Cerrado and Atlantic Rainforest. It is an atypical species in the Caatinga, being most commonly found in the Atlantic Rainforest (Escobar 2017; Queiroz 2009). Phenology: — Registered with flowers and fruits in December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2604DFEF67FAAE73A0.taxon	discussion	Taxonomic discussion: — Enterolobium contortisiliquum can be recognized, mainly, by the arboreous habit, inermous branches, glomerular inflorescence, white flowers, monadelphous androecium and samara fruits. This species is very peculiar because it has very thick, striate, gray trunks and an open canopy with diffuse branches.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2604DFEA33FA9C7628.taxon	description	Trees, branches tomentose, aculeate. Nectary absent. Stipules lateral, linear. Leaves imparipinnate, 3 – foliolate, leaflets opposite, ovate, venation actinodromous, translucid punctuation absent. Inflorescence pseudoraceme, axillary. Flowers pedicillate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, red, petals 5; androecium diadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pauciovulate. Fruit legume, sessile, linear, cylindric, plane, margin constricted, epicarp glabrous, brown. Seeds reniform, turgid, coat red, hilum central.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2604DFEA33FA9C7628.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 02 December 2019, fl., Aureliana Gomes 457 (JPB).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2604DFEA33FA9C7628.taxon	distribution	Distribution and ecology: — commonly known as mulungu, it is distributed in the group of dry forests in South America. In Brazil, the species is found in the Northeast (AL, BA, CE, PB, PE, PI, RN, SE) and Southeast (MG), associated with the Caatinga and Cerrado domains (BFG 2018; Queiroz 2009). Phenology: — Registered with flowers in December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2604DFEA33FA9C7628.taxon	discussion	Taxonomic discussion: — Erythrina velutina can be recognized, mainly, by the arboreal habit, aculeate branches, trifoliolate leaves, inflorescence in pseudoraceme, pedicelled flowers, red corolla and by the seeds with red coat. In the study area, it was the only tree species of Papilionoideae with armed branches and red flowers and seeds.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2704DFE8BBFAFA71E0.taxon	description	Trees, branches glabrous, spines. Nectary petiolar, sessile. Stipules caducous. Leaves bipinnate, 14 – 16 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence spikes, axillary. Flowers sessile, actinomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla gamopetalous, tubular, green, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane-corrugate, margin straight, epicarp glabrous, brown. Seeds obovate, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2704DFE8BBFAFA71E0.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 950 m elev,. 04 November 2019, fl., Aureliana Gomes 472 (JPB).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2704DFE8BBFAFA71E0.taxon	distribution	Distribution and ecology: — The species occurs in Argentina, Bolivia, Colombia, Ecuador, Guatemala, Mexico, Peru and Venezuela and in Brazil, where it is registered in the Central-West (MS), Northeast (AL, BA, CE, PB, PE, PI, RN, SE) and Southeast (MG), associated with the Caatinga and Cerrado domains in areas of seasonal deciduous forest (Freire Júnior & Silva 2019; Flora do Brasil 2020). Phenology: — Registered with flowers in November.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995D5F2704DFE8BBFAFA71E0.taxon	discussion	Taxonomic discussion: — Lachesiodendron viridiflorum can be recognized, mainly, by the armed branches with thorns, inflorescence in spikes, green flowers and sessile legume. Among the species of the Mimosoideae clade found in the area, this species was the only with thorns, while all other species of the clade are armed and aculeate.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2704DFEFCDFCE874EB.taxon	description	Vines, branches tomentulose, inermous. Nectary absent. Stipules triangular. Leaves imparipinnate, 3 – foliolate, leaflets opposite, ovate, venation actinodromous, translucid punctuation absent. Inflorescence pseudoraceme, axillary. Flowers pedicellate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, violet, petals 5; androecium monadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane, margin straight, epicarp tomentose, gray. Seeds orbicular, plane, coat brown, hilum central.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2704DFEFCDFCE874EB.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 870 m elev., 14 October 2019, fr., Aureliana Gomes 87224 (UFP); 17 September 2019, fr., Aureliana Gomes 2052 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2704DFEFCDFCE874EB.taxon	distribution	Distribution and ecology: — The species can be found in Bolivia and Brazil, where it is restricted to the Northeast region, occurring in the states of Alagoas, Bahia, Ceará, Paraíba, Pernambuco, Piauí, Rio Grande do Norte and Sergipe, in the Caatinga domain (BFG 2018; Flora of Brazil 2020). Phenology: — Registered with fruits between September and October.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2704DFEFCDFCE874EB.taxon	discussion	Taxonomic discussion: — Macropsychanthus grandiflorus can be recognized, mainly by the vine habit, trifoliolate leaves with actinodromous venation, pseudoraceme inflorescence, flowers of violet corolla and vegetable fruit, tomentose, with constricted margin. Among the Papilionoideae species in this study, Macropsychanthus grandiflorus and Canavalia brasiliensis share the vine habit, the trifoliolate leaves and the papilionaceous corolla. However, they can be distinguished by the leaflets with actinodromous, flower with 5 – lobed calyx, violet corolla and legume with constricted margin in M. grandiflorus vs. leaf with brochidodromous venation in leaflets, flowers with 4 – lobed calyx, pink petals and legume with a straight margin in C. brasiliensis.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2704DFEAF7FD917742.taxon	description	Climbing, branches tomentose, inermous. Nectary absent. Stipules lateral, triangular. Leaves imparipinnate, 3 – foliolate, leaflets opposite, ovate, venation actinodromous, translucid punctuation absent. Inflorescence raceme, axillary. Flowers pedicellate, asymmetric, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, red, petals 5; androecium diadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, cylindric, margin straight, epicarp tomentulose, brown. Seeds reniform, turgid, coat marbled, hilum central.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2704DFEAF7FD917742.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 13 May 2019, fl., Aureliana Gomes 3010 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2704DFEAF7FD917742.taxon	distribution	Distribution and ecology: — In Brazil, it is distributed throughout the Northeastern semi-arid region, and can also be found in Paraguay (Araújo et al. 2014; INCT: — Virtual Herbarium of Flora and Fungi). Phenology: — Registered with flowers in May.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2704DFEAF7FD917742.taxon	discussion	Macroptilium martii can be recognized, mainly, by the vine habit, leaves with ovate leaflets, asymmetric flowers, red, and by the cylindrical fruits. The species is popularly known as orelha de onça, because your leaflets are rounded the same a small ear (Queiroz, 2021).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2404DFE92CFC257275.taxon	description	Trees, branches tomentose, aculeate. Nectary absent. Stipules lateral, acicular. Leaves bipinnate, paripinnate, 14 – 18 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence spike, axillary. Flowers sessile, actinomorphic, diplostemonous; calyx gamosepalous, sepals 4, corolla gamopetalous, tubular, whitish, petals 4; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, stipitate, pluriovulate. Fruit craspedium, stipitate, linear, plane, margin straight, epicarp glabrous, brown. Seeds not observed.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2404DFE92CFC257275.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 13 May 2019, fl., Aureliana Gomes 3012 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2404DFE92CFC257275.taxon	distribution	Distribution and ecology: — The species is distributed in Colombia, Venezuela, Mexico and Brazil, where it is distributed from Ceará to Minas Gerais, exclusively associated with the Caatinga domain (Dourado, 2013; Flora do Brasil 2020). Souza et al. (2021), found this species in Sertão region at Paraíba state. Phenology: — Registered with flowers in May.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995C5F2404DFE92CFC257275.taxon	discussion	Taxonomic discussion: — Mimosa arenosa can be recognized, mainly, by the arboreous habit, tomentose aculateate branches, inflorescence in spike and by the flat craspedium fruits. Spiciform inflorescence is a feature shares with the other Mimosa species recorded in the study area, with Mimosa arenosa and M. tenuiflora their white flowers vs. pink flowers on Mimosa invisa and M. verrucosa. Mimosa arenosa presents twisted aculeous and flat straight craspedium vs. straighted aculeous and flat corrugate craspedium in M. tenuiflora.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2404DFEC5FFEC274A4.taxon	description	Vines, branches glabrous, aculeate. Nectary absent. Stipules lateral, narrow – triangular. Leaves bipinnate, paripinnate, 8 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence spike, axillary. Flowers sessile, actinomorphic, isostemonous; calyx gamosepalous, sepals 4, corolla gamopetalous, tubular, rose, petals 4; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit craspedium, sessile, linear, plane, margin straight, epicarp pilose, brown. Seeds obovate, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2404DFEC5FFEC274A4.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 875 m elev., 13 October 2019, fl. & fr., Aureliana Gomes 2022 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2404DFEC5FFEC274A4.taxon	distribution	Distribution and ecology: — The species has a wide distribution in South America. In Brazil, it occurs in all regions, being widely distributed in the Northeast (BA, CE, PE, PI, RN) associated with the Amazon, Caatinga, Cerrado and Atlantic Rainforest domains, found in rocky outcrops vegetation, and seasonal forests, as well as anthropized areas (Flora do Brasil 2020). Phenology: — Registered with flowers and fruits in October.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2404DFEC5FFEC274A4.taxon	discussion	Taxonomic discussion: — Mimosa invisa can be recognized, mainly, by the shrub habit, glabrous branches, with rickly., inflorescence pink spikes and long craspedium with straight margin. This was the only representative of Mimosa with a vine habit, a characteristic that differs from the other similar species found in the study area, which show arboreous habit.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2404DFEB0FFCE3772D.taxon	description	Trees, branches glabrescent, aculeate. Nectary absent. Stipules caducous. Leaves bipinnate, paripinnate, 8 – 14 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence spike, axillary. Flowers sessile, actinomorphic, diplostemonous; calyx gamosepalous, sepals 4, corolla gamopetalous, tubular, whitish, petals 4; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, stipitate, pluriovulate. Fruit craspedium, stipitate, linear, plane-corrugate, margin straight, epicarp glabrous, brown. Seeds obovate, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2404DFEB0FFCE3772D.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 02 December 2019, fl., Areliana Gomes 3158 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2404DFEB0FFCE3772D.taxon	distribution	Distribution and ecology: — The species has a wide distribution in the Brazilian semiarid region, associated with the phytogeographic domain of the Caatinga (Amorim et al., 2016; Souza et al., 2021). Phenology: — Registered with flowers in December.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2404DFEB0FFCE3772D.taxon	discussion	Taxonomic discussion: — Mimosa tenuiflora can be recognized, mainly, by the arboreous habit, aculeate, bipinnate leaves and inflorescence in spikes. A characteristic that distinguishes it from other Mimosa species in the studied area is the presence of a trunk with dark bark and in many cases it is common to have orbicular galls covered by glandular trichomes, being brown in the other representatives of the genus.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2504DFE9B7FE2A7210.taxon	description	Trees, branches glandular, inermous. Nectary absent. Stipules lateral, narrow-triangular. Leaves bipinnate, paripinnate, 10 – 18 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence spike, axillary. Flowers sessile, actinomorphic, isostemonous; calyx gamosepalous, sepals 4, corolla gamopetalous, tubular, rose, petals 4; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit craspedium, stipitate, linear, plane, margin constricted, epicarp verrucose, brown. Seeds not observed.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2504DFE9B7FE2A7210.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.000 m elev., 14 August 2019, fl., Aureliana Gomes 369 (JPB).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2504DFE9B7FE2A7210.taxon	distribution	Distribution and ecology: — The species has records in the Northeast and Central-West regions of Brazil, associated with the Caatinga and Cerrado domains, and is also found in transition areas of these biomes (Silva et al. 2015). Phenology: — Registered with flowers in August.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995F5F2504DFE9B7FE2A7210.taxon	discussion	Taxonomic discussion: — Mimosa verrucosa can be recognized, mainly, by the arboreous habit, inermous branches, inflorescence in spikes. It is distinguished from the other Mimosa species in the area studied by the inermous and verrucose branches.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F2504DFEC7DFB077553.taxon	description	Trees, branches glabrous, inermous. Nectary absent. Stipules caducous. Leaves imparipinnate, 8 – 9 – foliolate, leaflets alternate, elliptic – oblong, venation brochidodromous, translucid punctuation present. Inflorescence raceme, terminal. Flowers pedicillate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, whitish, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pauciovulate. Fruit samara, stipitate, linear, plane, margin straight, epicarp glabrous, brown. Seeds not observed.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F2504DFEC7DFB077553.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.100 m elev., 23 August 2019, fl., Aureliana Gomes 3174 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F2504DFEC7DFB077553.taxon	distribution	Distribution and ecology: — The species is distributed from southern Mexico to northern Argentina. In Brazil, it is associated with the Central-West (DF, GO, MS, MT), Northeast (BA, CE, PB), Southeast (ES, MG, RJ, SP) and South (PR) regions in the Cerrado and Atlantic Rainforest domains in deciduous seasonal vegetation, semideciduous seasonal forest and ombrophilous forest (Mathias et al. 2000; Flora do Brasil 2020). Recently this species was found in Cariri Paraibando in dry forest net the granitic formations (Queiroz 2021) Phenology: — Registered with flowers in August.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F2504DFEC7DFB077553.taxon	discussion	Taxonomic discussion: — Myroxylon peruiferum can be recognized, mainly, by the arboreous habit, imparipinnate leaves with alternate leaflets, white flowers and samara type fruit. Among the species with imparipinnate leaves and alternate leaflets in the studied area, it is the only one that presents leaflets with pellucid glands.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F2504DFEB3FFDB177D5.taxon	description	Trees, branches glabrous, inermous. Nectary absent. Stipules lateral, narrow – triangular. Leaves imparipinnate, 5 – foliolate, leaflets opposite, obovate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, axillary. Flowers pedicillate, zygomorphic, diplostemonous; calyx gamosepalous with setose indument, sepals 5, corolla dialypetalous, papilionaceous, yellow, petals 5; androecium monadelphous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit loment, sessile, linear, cylindric, margin straight, epicarp tomentose, gray. Seeds not observed.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F2504DFEB3FFDB177D5.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.050 m elev., 23 September 2019, fl., Aureliana Gomes 414 (JPB).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F2504DFEB3FFDB177D5.taxon	distribution	Distribution and ecology: — The species is distributed in Mexico, Venezuela and Brazil, where it is associated with all regions and biomes (INCT - Virtual Herbarium of Flora and Fungi; Ferreira et al. 2019). Phenology: — Registered with flowers in September.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F2504DFEB3FFDB177D5.taxon	discussion	Taxonomic discussion: — Nissolia vincentina can be recognized, mainly, by the vine habit, narrow-triangular stipules, 5 – leaflet leaves, pedicellate flowers, 5 petals, yellow papilionaceous corolla. It is distinguished from the other Fabaceae species found in the area studied by the 5 – leaflet leaves, flowers gathered in short racemes, calyx with a bristly tip, and by the long loment.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F3A04DFE9B8FEDF72D8.taxon	description	Trees, branches glabrous, aculeate. Nectary petiolar, sessile. Stipules caducous. Leaves bipinnate, paripinnate, 8 – 24 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence spike, axillary. Flowers sessile, actinomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla gamopetalous, tubular, yellow, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, sessile, pluriovulate. Fruit legume, sessile, linear, plane-corrugate, margin straight, epicarp glabrous, brown. Seeds obovate, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F3A04DFE9B8FEDF72D8.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 900 m ele., 06 February 2020, fl., A. Gomes 3147 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F3A04DFE9B8FEDF72D8.taxon	distribution	Distribution and ecology: — Piptadenia retusa is restricted to the Caatinga phytogeographic domain, being found in the states of Alagoas, Bahia, Ceará, Paraíba, Pernambuco, Piauí, Rio Grande do Norte and Sergipe (Cardoso & Queiroz 2007). In the study area, it was collected in the interior of the forest, at 900 m. Phenology: — Registered with flower in February.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C1995E5F3A04DFE9B8FEDF72D8.taxon	discussion	Taxonomic discussion: — Piptadenia retusa can be recognized, mainly, by the arboreous habit, branches with the presence of aculeous and inflorescences in axillary spike, differentiating itself from the other Mimosa species in the studied area by the presence of extrafloral nectary in the petiole and legume type fruit vs. extrafloral nectary absent and craspédio fruit.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199415F3A04DFECABFDA1756D.taxon	description	Trees, branches glabrous, inermous. Nectary absent. Stipules interpetiolar, triangular. Leaves imparipinnate, 5 – foliolate, leaflets opposite, ovate-elliptic, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, terminal. Flowers pedicellate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, yellow, petals 5; androecium diadelphous, homodinamous, anthers longitudinal; ovary superior, sessile, pauciovulate. Fruit samara, stipitate, elliptic, plane, margin straight, epicarp glabrous, brown. Seeds elliptic, plane, coat black, hilum central.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199415F3A04DFECABFDA1756D.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 950 m elev., 23 August 2019, fl., Aureliana Gomes 2080 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199415F3A04DFECABFDA1756D.taxon	distribution	Distribution and ecology: — Platymiscium floribundum is an endemic species in Brazil, present in the Northeast, Midwest, Southeast and South regions associated with the domains of the Caatinga, Cerrado and Atlantic Forest (Flora do Brasil 2020). Popularly known as jacarandá do litoral, the species also has records in Bolivia and French Guiana (INCT - Virtual Herbarium of Flora and Fungi). Phenology: — Registered with flowers in August.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199415F3A04DFECABFDA1756D.taxon	discussion	Taxonomic discussion: — Platymiscium floribundum can be recognized, mainly, by the arboreous habit, interpeciolar stipules, leaves opposite, imparipinnate with opposite leaflets, yellow corolla, papilionaceous, samara type fruit and seeds with black coat.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199415F3A04DFEB77FEAE785C.taxon	description	Trees, branches glabrous, inermous. Nectary absent. Stipules caducous. Leaves imparipinnate, 5 – 6 – foliolate, leaflets alternate, ovate-elliptic, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, terminal. Flowers pedicellate, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, lilac, petals 5; androecium monadelphous, homodinamous, anthers longitudinal; ovary superior, stipitate, pauciovulate. Fruit legume, sessile, oblanceolate, plane, margin straight, epicarp glabrous, brown. Seeds orbicular, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199415F3A04DFEB77FEAE785C.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 04 November 2019, fl., Aureliana Gomes 3112 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199415F3A04DFEB77FEAE785C.taxon	distribution	Distribution and ecology: — The species is endemic to Brazil, registered in the Northeast (AL, BA, CE, MA, PB, PE) and Southeast (MG), associated with the Caatinga and Atlantic Rainforest domains growing in gallery forest, seasonal deciduous forest and semideciduous, in areas of secondary vegetation (Meireles & Tozzi 2007; Flora do Brasil 2020. Phenology: — Registered with flowers in November.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199415F3A04DFEB77FEAE785C.taxon	discussion	Taxonomic discussion: — Poecilanthe grandiflora can be recognized, mainly, by the arboreous habit, imparipinnate leaves with alternate leaflets without translucent punctuations, lilac flowers and legume fruit, sessile. Among the Papilionoideae species found in the area, it can be readily recognized for presenting lilac flowers and legume with rigid valves.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3B04DFEE8FFCA073DC.taxon	description	Trees, branches glabrescent, aculeate. Nectary petiolar, sessile. Stipules lateral, narrow-triangular. Leaves bipinnate, paripinnate, 8 – 16 – foliolate, leaflets opposite, oblong, venation actinodromous, translucid punctuation absent. Inflorescence glomerule, axillary. Flowers sessile, actinomorphic, polistemonous; calyx gamosepalous, sepals 5, corolla gamopetalous, tubular, whitish, petals 5; androecium dialystaminous, homodinamous, anthers longitudinal; ovary superior, stipitate, pluriovulate. Fruit legume, sessile, linear, plane – corrugate, margin straight, epicarp glabrous, brown. Seeds oblong, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3B04DFEE8FFCA073DC.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.197 m elev., 12 April 2019, fl., Aureliana Gomes 2030 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3B04DFEE8FFCA073DC.taxon	distribution	Distribution and ecology: — The species is distributed in all regions of Brazil associated with the phytogeographic domains of the Amazon, Caatinga, Cerrado, Atlantic Rainforest and Pantanal in areas of seasonal forest, swamps of altitude and restinga (Barros 2011). Phenology: — Registered with flowers in April.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3B04DFEE8FFCA073DC.taxon	discussion	Taxonomic discussion: — Senegalia polyphylla can be recognized, mainly, by the arboreous habit, branches armed with aculeous, petiolar nectaries, bipinnate leaves, and by the inflorescences in axillary glomerule. Among the species of the Mimosoideae clade, we find species with monadelphous androecium and dialystaminous. The representatives of monadelphous androecium belong to the Ingeae tribe, while those with dialystaminous androecium may belong to the Mimoseae or Acacieae tribes. The androceu-related characteristic used to separate species is the number of stamens; the species of Mimoseae are isosstaminous or diplostaminous whereas those belonging to Acacieae have polistaminous flowers. This species is popularly known as angico branco.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3B04DFEDA7FEF77628.taxon	description	Shrubs erect, branches tomentose, inermous. Nectary rachis, stipitate. Stipules lateral, acicular. Leaves paripinnate, 4 – foliolate, leaflets opposite, lanceolate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, terminal. Flowers pedicillate, zygomorphic, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, yellow, petals 5; androecium dialystaminous, heterodinamous, anthers poricidal; ovary superior, stipitate, pluriovulate. Fruit berry, stipitate, linear, cylindric, margin straight, epicarp tomentulose, black. Seeds obovate, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3B04DFEDA7FEF77628.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.000 m elev., 12 April 2019, fl. Aureliana Gomes 2015 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3B04DFEDA7FEF77628.taxon	distribution	Distribution and ecology: — The species is endemic to Brazil, with records in the states of Bahia, Espírito Santo, Minas Gerais, Rio de Janeiro, São Paulo, Paraná and Santa Catarina associated with the Cerrado and Atlantic Rainforest domains in areas of ombrophilous and seasonal forest (Tozzi 2016). Phenology: — Registered with flowers in April.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3B04DFEDA7FEF77628.taxon	discussion	Taxonomic discussion: — Senna angulata can be recognized, mainly, by the shrub habit, 4 - leaflet leaves and inflorescence in terminal raceme, with yellow corolla flowers, heterodinamous androecium, poricidal anthers and bacoid fruit. Senna species found in the studied area have 4 – leaflet leaves, except Senna martina and S. obtusifolia, which have a higher number of leaflets. Among the representatives of Senna 4 – leaftles, S. angulata is the one with the largest size, which can be confused with Senna macranthera. However, the first is an erect shrub, while the second is a scandant shrub.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3804DFE8BBFC33718C.taxon	description	Shrubs, branches tomentose, inermous. Nectary rachis, stipitate. Stipules lateral, acicular. Leaves paripinnate, 4 – foliolate, leaflets opposite, lanceolate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, terminal. Flowers pedicillate, zygomorphic, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, yellow, petals 5; androecium dialystaminous, heterodinamous, anthers poricidal; ovary superior, stipitate, pluriovulate. Fruit berry, stipitate, linear, cylindric, margin straight, epicarp tomentulose, black. Seeds obovate, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3804DFE8BBFC33718C.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 13 May 2019, fl., Aureliana Gomes 2016 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3804DFE8BBFC33718C.taxon	distribution	Distribution and ecology: — It occurs in Colombia, Ecuador, Peru, Venezuela and Brazil, where it is represented in all regions associated with the Caatinga, Cerrado and Atlantic Rainforest domains in rocky outcrop vegetation, seasonal forest and sandbank, commonly used for urban afforestation purposes (Silva et al. 2018; Flora do Brasil 2020; Santos et al. 2020). Phenology: — Registered with flowers in May.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199405F3804DFE8BBFC33718C.taxon	discussion	Taxonomic discussion: — Senna macranthera can be recognized, mainly, for the shrub habit, inflorescence in terminal raceme, pedicel flowers with 5 yellow petals and bacoid fruits. Among the species of Senna 4 – leaflets found in the study area Senna macranthera can be confused vegetatively with S. rizzinii, the first having linear bracts and cream anthers, while the second has ovoid bracts and yellow anthers.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3804DFEC11FD727423.taxon	description	Shrubs, branches tomentose, inermous. Nectary stipule, sessile. Stipules lateral, acicular. Leaves paripinnate, 32 – 36 – foliolate, leaflets opposite, lanceolate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, axillary, terminal. Flowers pedicillate, asymmetric, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, yellow, petals 5; androecium dialystaminous, heterodinamous, anthers poricidal; ovary superior, stipitate, pluriovulate. Fruit legume, stipitate, linear, plano-striate, margin straight, epicarp glabrous, black. Seeds obovate, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3804DFEC11FD727423.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.100 m elev., 22 February 2019, fl., Aureliana Gomes 2031 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3804DFEC11FD727423.taxon	distribution	Distribution and ecology: — The species is exclusive to the Brazilian Northeast, found in the states of Alagoas, Bahia, Ceará, Paraíba, Pernambuco, Piauí and Rio Grande do Norte related to the Caatinga domain (BFG 2018). In Paraíba it is comun in Cariri paraibano next the great granitic formations (Queiroz 2021). Phenology: — Registered with flowers and fruits in February.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3804DFEC11FD727423.taxon	discussion	Taxonomic discussion: — Senna martiana can be recognized, mainly, by the shrubby habit, lateral stipules, paripinnate leaves, inflorescence in terminal raceme and by the flowers of yellow corolla. It is distinguished from other similar representatives of the area studied by the presence of a gland in the stipule, yellow bracts and leaves with leaflets greater than three pairs in Senna obtusifolia.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3804DFEA8FFBEF76A5.taxon	description	Subshrubs, branches glabrous, inermous. Nectary rachis, stipitate. Stipules lateral, acicular. Leaves paripinnate, 6 – foliolate, leaflets opposite, obovate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, axillary. Flowers pedicillate, zygomorphic, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, yellow, petals 5; androecium dialystaminous, heterodinamous, anthers poricidal; ovary superior, stipitate, pluriovulate. Fruit legume, sessile, linear, cylindric, margin straight, epicarp glabrous, brown. Seeds trapezoid, plane, coat brown, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3804DFEA8FFBEF76A5.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 900 m elev., 14 August 2019, fl., Aureliana Gomes 356 (JPB).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3804DFEA8FFBEF76A5.taxon	distribution	Distribution and ecology: — The species is found in all regions of Brazil, associated with all phytogeographic domains and is found in disturbed areas, altitude fields, seasonal forest, costal forest and rocky outcrops (BFG 2018, Flora do Brasil 2020). In the study area, it was collected at the edge of the fragment, at 900 m. Phenology: — Registered with flowers in August.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3804DFEA8FFBEF76A5.taxon	discussion	Taxonomic discussion: — Senna obtusifolia can be recognized, mainly, by the subshrubby habit, 6 – leaflet leaves with nectary stipitate in the raque, axillary raceme, yellow corolla flowers and by the vegetable type fruit. Among the Senna species in the studied area, it was the only one that presented 6 – foliolate leaves.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3904DFE908FAEC71E1.taxon	description	Shrubs scandent, branches tomentose, inermous. Nectary rachis, stipitate. Stipules lateral, acicular. Leaves paripinnate, 4 – foliolate, leaflets opposite, lanceolate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, axillary, terminal. Flowers pedicillate, zygomorphic, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, yellow, petals 5; androecium dialystaminous, heterodinamous, anthers poricidal; ovary superior, sessile, pluriovulate. Fruit berry, stipitate, linear, cylindric, margin straight, epicarp tomentulose, brown. Seeds obovate, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3904DFE908FAEC71E1.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.000 m elev., 03 May 2019, fl., Aureliana Gomes 2018 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3904DFE908FAEC71E1.taxon	distribution	Distribution and ecology: — It is restricted to the Northeast of Brazil (AL, BA, CE, MA, PB, PE, PI, RN, SE), associated with the phytogeographic domain of the Caatinga (Queiroz 2009; BFG 2018). Phenology: — Registered with flowers in May.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199435F3904DFE908FAEC71E1.taxon	discussion	Taxonomic discussion: — Senna rizzinii can be recognized, mainly, by the shrubby habit, inermous branches, lateral stipules, terminal raceme, zygomorphic flowers with yellow corolla and bacoid fruits. It resembles Senna macranthera morphologically, but can be distinguished by the ovate bracts in S. rizzinii vs. linear bracts in S. macranthera.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199425F3904DFEFF3FAA47468.taxon	description	Shrubs scandent, branches glabrous, inermous. Nectary petiolar, stipitate. Stipules lateral, oblanceolate. Leaves paripinnate, 4 – foliolate, leaflets opposite, lanceolate, venation brochidodromous, translucid punctuation absent. Inflorescence raceme, axillary, terminal. Flowers pedicillate, zygomorphic, diplostemonous; calyx dialysepalous, sepals 5, corolla dialypetalous, yellow, petals 5; androecium dialystaminous, heterodinamous, anthers poricidal; ovary superior, stipitate, pluriovulate. Fruit berry, stipitate, linear, cylindric, margin straight, epicarp tomentulose, black. Seeds obovate, plane, coat black, hilum basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199425F3904DFEFF3FAA47468.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 1.000 m elev., 05 October 2018, fl., Aureliana Gomes 3041 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199425F3904DFEFF3FAA47468.taxon	distribution	Distribution and ecology: — The species occurs in eastern Brazil, associated with the Caatinga, Cerrado and Atlantic Rainforest domains on the edges of humid forest and in coastal areas (Queiroz 2009). In the study area, it was collected at 1,000 m. Phenology: — Registered with flowers in October.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199425F3904DFEFF3FAA47468.taxon	discussion	Taxonomic discussion: — Senna splendida can be recognized, mainly, by the shrubby habit, glabrous branches, oblanceolate stipules, pedicellate flowers and yellow corolla. It is distinguished from other similar species in the studied area with 4 – foliolate leaves by the oblanceolate stipule and by the glabrous branches and leaves.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199425F3904DFEA7BFDE37764.taxon	description	Subshrubs, branches glandular, inermous. Nectary absent. Stipules lateral, triangular. Leaves imparipinnate, 3 – foliolate, leaflets opposite, elliptic, venation camptodromous, translucid punctuation absent. Inflorescence spike, axillary, terminal. Flowers sessile, zygomorphic, diplostemonous; calyx gamosepalous, sepals 5, corolla dialypetalous, papilionaceous, yellow, petals 5; androecium monadelphous, heterodinamous, anthers longitudinal; ovary superior, sessile, pauciovulate. Fruit loment, sessile, ovate, plane, margin straight, epicarp glabrous, brown. Seeds reniform, plane, coat brown, hilum sub-basal.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199425F3904DFEA7BFDE37764.taxon	materials_examined	Examined material: — BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 05 October 2018, fl., Aureliana Gomes 3017 (HACAM).	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199425F3904DFEA7BFDE37764.taxon	distribution	Distribution and ecology: — It has a wide distribution in the American continent (Ramalho; Rosa, 2010). In Brazil, this species presents itself in a greater proportion in the Northeast region, followed by the North, CentralWest, Southeast and South regions of the country, associated with the domains of the Amazon, Caatinga, Cerrado and Atlantic Forest (BFG 2018, Mendonça et al. 2019). Phenology: — Registered with flowers in October.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
038E87C199425F3904DFEA7BFDE37764.taxon	discussion	Taxonomic discussion: — Stylosanthes viscosa can be recognized, mainly, by the subshrubby habit, by the lateral stipules and 3 – foliolate leaves, inflorescence in spike, yellow corolla flowers and loment fruits. Regarding the species of Papilionoideae, it shares, among other species of the group, the presence of glutinous branches, stipule adnate to the petiole and 3 – foliolate leaves. However, it is distinguished from other species with 3 – foliolate leaves due to the presence of a stipule adnate to the petiole.	en	Gomes, Aureliana Santos, Rodrigues, Erimágna De Morais, Moura, Débora Coelho, Melo, José Iranildo Miranda De, Ribeiro, Rayane De Tasso Moreira, Queiroz, Rubens Teixeira De (2022): Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil. Phytotaxa 555 (1): 17-41, DOI: 10.11646/phytotaxa.555.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.555.1.2
