Enterolobium sect. Robrichia Enterolobium schomburgkii Pithecellobium schomburgkii Advances in Legume Systematics 14. Classification of Caesalpinioideae. Part 2: Higher-level classification Bruneau, Anne de Queiroz, Luciano Paganucci Ringelberg, Jens J. Borges, Leonardo M. Bortoluzzi, Roseli Lopes da Costa Brown, Gillian K. Cardoso, Domingos B. O. S. Clark, Ruth P. Conceicao, Adilva de Souza Cota, Matheus Martins Teixeira Demeulenaere, Else de Stefano, Rodrigo Duno Ebinger, John E. Ferm, Julia Fonseca-Cortes, Andres Gagnon, Edeline Grether, Rosaura Guerra, Ethiene Haston, Elspeth Herendeen, Patrick S. Hernandez, Hector M. Hopkins, Helen C. F. Huamantupa-Chuquimaco, Isau Hughes, Colin E. Ickert-Bond, Stefanie M. Iganci, Joao Koenen, Erik J. M. Lewis, Gwilym P. de Lima, Haroldo Cavalcante de Lima, Alexandre Gibau Luckow, Melissa Marazzi, Brigitte Maslin, Bruce R. Morales, Matias Morim, Marli Pires Murphy, Daniel J. O'Donnell, Shawn A. Oliveira, Filipe Gomes Oliveira, Ana Carla da Silva Rando, Juliana Gastaldello Ribeiro, Petala Gomes Ribeiro, Carolina Lima Santos, Felipe da Silva Seigler, David S. da Silva, Guilherme Sousa Simon, Marcelo F. Soares, Marcos Vinicius Batista Terra, Vanessa PhytoKeys 2024 2024-04-03 240 1 552 BTPNS (Barneby & J. W. Grimes) A. R. M. Luz & E. R. Souza, Syst. Bot. 47: 274. 2022. (Barneby & J. W. Grimes) A. R. M. Luz & E. R. Souza, Syst. Bot. 47: 274. 2022. Magnoliopsida Fabaceae Robrichia CoL Plantae Robrichia Fabales 0 1 Tracheophyta genus   Figs 265 , 266 , 268 , 271   Enterolobium sect. RobrichiaBarneby & J.W. Grimes, Mem. New York Bot. Gard. 74(1): 249. 1996. Type: Enterolobium schomburgkii(Benth.) Benth. [≡ Pithecellobium schomburgkiiBenth.]   Type.   Robrichia schomburgkii(Benth.) A.R.M. Luz & E.R. Souza [≡  Pithecellobium schomburgkiiBenth.]  Description. Trees 8-50 m high (Fig. 268B); bark rugose, with lenticels, sometimes exfoliating in irregular layers. Stipulesobovate to lanceolate-falcate, sericeous, fulvous, caducous. Leavesbipinnate, pubescent, fulvous (Fig. 265E); leaf glands near the base of the petiole and sometimes between the pairs of pinnae; paraphyllidia present or absent; pinnae 10-30 pairs; leaflets 40-80 pairs, linear, asymmetrical. Inflorescence unitshomomorphic or heteromorphic capitula (Fig. 265F), 2-5-fascicled in leaf axils or amongst the branches below the coeval leaves, in the heteromorphic ones the terminal flower is larger than the others, and the staminal tube is exerted. Flowers5-merous; calyx gamosepalous, campanulate; corolla gamopetalous, campanulate, lobes triangular, fulvous villose; stamens numerous, the filaments basally united into a tube; pollen in 16, 28-celled polyads; ovary sessile, ovoid, fulvous villose. Fruitsindehiscent, reniform auriculiform, sometimes twisted, laterally compressed, puberulent (Fig. 266F). Seedsovoid, ellipsoid or obovoid; pleurogram present.  Chromosome number. Unknown.  Included species and geographic distribution. Three species known to date,  R. glaziovii(Benth.) A.R.M. Luz & E.R. Souza,  R. oldemanii(Barneby & J.W. Grimes) A.R.M. Luz & E.R. Souza and  R. schomburgkii( Souza et al. 2022b), from the south of Mexico to Bolivia, to 1100 m elevation.  Robrichia glazioviiis endemic to eastern Brazil ( Morim et al. 2020),  R. oldemaniioccurs in French Guiana and northern Brazil ( Fernandes 2023) and  R. schomburgkiiis present from the south of Mexico to Bolivia (Fig. 271).   Figure 271.Distribution of  Robrichiabased on quality-controlled digitised herbarium records. See Suppl. material 1 for the source of occurrence data.  Ecology.   Robrichiaspecies are large trees extending to the rainforest canopy. Dulmen (2001)reported "small bees" as the pollinators of  R. schomburgkii.  Etymology. The name of this genus is composed of the initial parts of two names "Rob"and "Rich", which Barneby and Grimes (1996)chose to commemorate the brothers Robert and Richard Schomburgk, German naturalists who sampled the Guyana flora in the 19th century.  Human uses. In Brazilian Amazonia,  Robrichia schomburgkiiis used for civil and naval construction (Le Cointe 1947); in Oaxaca, Mexico this species is also used in teas to relieve stomach ache ( Mesquita 1990).  Notes.  Barneby and Grimes (1996)described Enterolobium sect. Robrichiato include three species of  Enterolobiumwith similar morphology,  E. glaziovii,  E. oldemaniiand  E. schomburgkii. Molecular phylogenetic analysis with plastid and nuclear markers ( Souza et al. 2022b) and phylogenomic studies ( Ringelberg et al. 2022) do not support the monophyly of  Enterolobiumand resolved section Enterolobium Robrichiaas sister to the tropical African genus  Osodendron, both nested in the Ingaclade ( Ringelberg et al. 2022).  Taxonomic references.  Barneby and Grimes (1996); Mesquita (1990); Morim et al. (2020); Souza et al. (2022b).