Blanchetiodendron Barneby & J.W. Grimes, Mem. New York. Bot. Gard. 74(1): 127. 1996.

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, 2024, Advances in Legume Systematics 14. Classification of Caesalpinioideae. Part 2: Higher-level classification, PhytoKeys 240, pp. 1-552 : 1

Blanchetiodendron Barneby & J.W. Grimes, Mem. New York. Bot. Gard. 74(1): 127. 1996.

Figs 265 , 266 , 267

Type.

Blanchetiodendron blanchetii (Benth.) Barneby & J.W. Grimes [≡ Enterolobium blanchetii Benth.]

Description.

Unarmed trees; perulate buds at some leaf axils, the perules imbricate and striate. Stipules absent. Leaves bipinnate; petiolar nectary near or above mid-petiole, sessile, cupular or shallow-cupular; pinnae 2-4 pairs; leaflets 8-15 pairs, (sub)opposite, variable in size and shape. Inflorescence units capitate or umbelliform, grouped in axillary pseudoracemes or terminal panicles (Fig. 265A, B ). Flowers dimorphic, the peripheral ones slenderly pedicellate, the terminal one sessile or shortly pedicellate; sepals 5, gamosepalous; petals 5, gamopetalous; stamens ca. 26-38 in peripheral flowers and 30-46 in terminal flowers ( Barneby and Grimes 1996), filaments basally fused into a tube, stemonozone present, anthers rimose; pollen in 16-celled polyads; ovary glabrous. Fruit a plano-compressed, oblong, legume, inertly dehiscent through both margins, valves papery (Fig. 266A ). Seeds elliptic to suborbicular, narrowly winged, pleurogram absent.

Chromosome number.

Unknown.

Included species and geographic distribution.

Monospecific ( B. blanchetii ), endemic to north-eastern Brazil mostly from central Bahia state, extending to northern Minas Gerais and southern Piauí (Fig. 267 ).

Ecology.

Seasonally deciduous and semi-deciduous forests and woodlands from the Caatinga and Atlantic Forest phytogeographical domains, from 450 to 1000 m elevation ( Queiroz 2009).

Etymology.

The genus is named after the Swiss naturalist Jacques Samuel Blanchet, and dendron (Greek = tree).

Human uses.

Unknown.

Notes.

The genus Blanchetiodendron was described as a monotypic genus by Barneby and Grimes (1996) to accommodate B. blanchetii , previously included in Enterolobium , Pithecellobium Mart. ( Bentham 1876) or Albizia ( Lewis 1987).

Barneby and Grimes (1996) included Blanchetiodendron (together with Leucochloron and Chloroleucon (Benth.) Britton & Rose) in the informal Chloroleucon alliance because of the presence of axillary perulate resting buds, but this group has since been shown to be polyphyletic ( Koenen et al. 2020a). Blanchetiodendron is sister to the rest of the Inga clade and can be diagnosed by the heteromorphic capitate umbelliform inflorescences grouped in axillary efoliate pseudoracemes or in terminal panicles.

Taxonomic references.

Barneby and Grimes (1996); Morim (2020); Queiroz (2009).

Figures

Figure 265. Foliage, inflorescence and fruits in Inga clade A, B Blanchetiodendron blanchetii (Benth.) Barneby & J. W. Grimes A flowering branch showing the capitate inflorescences clustered in efoliate pseudoracemes B detail of the heteromorphic capitate inflorescence C Leucochloron limae Barneby & J. W. Grimes leafless branch showing homomorphic capitate inflorescences and follicle fruits D Abarema diamantina E. Guerra, Iganci & M. P. Morim with axillary homomorphic capitate inflorescences E, F Robrichia schomburgkii (Benth.) A. R. M. Luz & E. R. Souza E young branch with the characteristic rusty pubescent indumentum F detail of a homomorphic capitate inflorescences G Osodendron altissimum (Hook. f.) E. J. M. Koenen detail of a homomorphic capitate inflorescence H, I Macrosamanea amplissima (Ducke) Barneby & J. W. Grimes H flowering branch with a homomorphic capitate inflorescence I bracts with showy extrafloral nectaries and visiting ants. Photo credit: A, B, D D Cardoso C GP Lewis E G Perez Huertas F F Oviedo-Brenes G E Bidaut H, I J Iganci.

Figure 266. Fruit diversity in Inga clade A young pod of Blanchetiodendron blanchetii (Benth.) Barneby & J. W. Grimes B, C Leucochloron incuriale (Vell.) Barneby & J. W. Grimes B dehisced follicular fruits exposing the seeds (C) D lomentiform fruit of Osodendron altissimum (Hook. f.) E. J. M. Koenen E indehiscent and internally septate pod of Osodendron leptophyllum (Harms) E. J. M. Koenen F auriculiform indehiscent pod of Robrichia schomburgkii (Benth.) A. R. M. Luz & E. R. Souza G young fruit of Abarema cochliacarpos (Gomes) Barneby & J. W. Grimes H dehisced twisted pod of Abarema diamantina E. Guerra, Iganci & M. P. Morim exposing the reddish endocarp and bicoloured seeds I dehisced follicle of Macrosamanea amplissima (Ducke) Barneby & J. W. Grimes J Young fruits of Zygia brenesii (Standl.) L. Rico K dehisced pods of Zygia cognata (Schltdl.) Britton & Rose L-O Indehiscent pods of Inga, with fleshy and sweety sarcotesta around the seeds L Inga grazielae (Vinha) T. D. Penn. M Inga capitata Desv. N Inga ingoides (Rich.) Willd. O Inga edulis Mart. Photo credits A, H LP Queiroz B NA Escobar C J Vieira D D Harris E P Latham, www. africanplants. senckenberg. de F LCampbell G, M, N RT Queiroz http: // rubens-plantasdobrasil. blogspot. com / I J Iganci J F Chinchila Romero K S de Jesus Calva L, O D Cardoso.

Figure 267. Distribution of Blanchetiodendron based on quality-controlled digitised herbarium records. See Suppl. material 1 for the source of occurrence data.