28. Poecilanthe grandiflora Bentham (1860: 80) . (Fig. 3f)

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.

Examined material:— BRAZIL. Paraíba: Maturéia, Pico do Jabre, 800 m elev., 04 November 2019, fl., Aureliana Gomes 3112 (HACAM) .

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.

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.