Platymiscium floribundum Vogel (1837: 199)

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 : 33

27. Platymiscium floribundum Vogel (1837: 199) . ( Fig. 3b )

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.

Examined material:— BRAZIL. Paraíba: Maturéia, Pico do Jabre , 950 m elev., 23 August 2019, fl., Aureliana Gomes 2080 ( HACAM) .

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.

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.

Figures

FIGURE 3. Species of Fabaceae Lindl. of the study area, Pico do Jabre State Park, Paraíba, Brazil. a Centrosema brasilianum. b Platymiscium floribundum. c Macropsychanthus grandiflorus d Centrosema sagittatum. e Ancistrotropis peduncularis. f Poecilanthe grandiflora. g Erythrina velutina. h Chamaecrista repens. i Canavalia brasiliensis. j Bauhinia cheilantha. k Stylosanthes viscosa. l Crotalaria vitelina. (Source: the authors).