Fabaceae Lindl. in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil Author Gomes, Aureliana Santos Departamento de Geografia - Universidade Federal de Campina Grande: - Campus I, Centro de Humanidades. Unidade Acadêmica de Geografia-UAG, R. Aprígio Veloso, 882, Universitário, Campina Grande, PB, 58428 - 830, Brasil. Author Rodrigues, Erimágna De Morais Author Moura, Débora Coelho Departamento de Geografia - Universidade Federal de Campina Grande: - Campus I, Centro de Humanidades. Unidade Acadêmica de Geografia-UAG, R. Aprígio Veloso, 882, Universitário, Campina Grande, PB, 58428 - 830, Brasil. Author Melo, José Iranildo Miranda De Programa de Pós-Graduação em Ecologia e Conservação - Universidade Estadual da Paraíba - UEPB, Departamento de Biologia, Centro de Ciências Biológicas e da Saúde, Av. das Baraúnas 351, Campus Universitário, Bairro Universitário, Campina Grande, PB, 58429 - 500, Brasil. Author Ribeiro, Rayane De Tasso Moreira Universidade Federal Rural de Pernambuco, Departamento de Biologia, Laboratório de Taxonomia Vegetal (LATAX), Rua Dom Manoel de Medeiros, s / n, Campus Dois Irmãos, 52.171 - 900, Recife, PE, Brasil. Author Queiroz, Rubens Teixeira De Departamento de Sistemática e Ecologia- Universidade Federal da Paraíba - Campus I, Centro de Ciências Exatas e da Natureza, Jardim Universitário, Castelo Branco, João Pessoa, PB, 58051 - 900, Brasil. & Author for correspondence: rbotânico @ gmail. com text Phytotaxa 2022 2022-07-19 555 1 17 41 http://dx.doi.org/10.11646/phytotaxa.555.1.2 journal article 102841 10.11646/phytotaxa.555.1.2 2e2412c5-4709-4f24-b489-db901a316721 1179-3163 6875635 6. Calliandra subspicata Bentham (1875: 556) . ( Fig. 4h ) 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. 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 ). 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. 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.