Anadenanthera colubrina (Velloso 1827: 11) Brenan (1955: 182)

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), pp. 17-41 : 22

2. Anadenanthera colubrina (Velloso 1827: 11) Brenan (1955: 182) . ( Fig. 4b )

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.

Examined material:— BRAZIL. Paraíba: Maturéia, Pico do Jabre , 800 m elev., 04 November 2019, fl., Aureliana Gomes 86935 ( UFP) .

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.

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.

Figures

FIGURE 4. Species of Fabaceae Lindl. of the study area, Pico do Jabre State Park, Paraíba, Brazil. a Chamaecrista nictitans. b Anadenanthera colubrina. c Chamaecrista zygophylloides. d Albizia polycephala. e Senna macranthera. f Mimosa invisa. g Senna rizzinii. h Calliandra subspicata. i Enterolobium contortisiliquum. j Senna martiana. (Source: the authors).