Senna martiana ( Bentham 1870: 127–128 ) H.S. Irwin & Barneby (1982: 465)

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 : 35

32. Senna martiana ( Bentham 1870: 127–128) H.S. Irwin & Barneby (1982: 465) . ( Fig. 4j )

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.

Examined material:— BRAZIL. Paraíba: Maturéia, Pico do Jabre , 1.100 m elev., 22 February 2019, fl., Aureliana Gomes 2031 ( HACAM) .

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.

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 .

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).