Calliandra subspicata Bentham (1875: 556)

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 : 26

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.

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).