Jacqueshuberia Ducke, Arch. Jard. Bot. Rio de Janeiro 3: 118. 1922.

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

Jacqueshuberia Ducke, Arch. Jard. Bot. Rio de Janeiro 3: 118. 1922.

Figs 79 , 80 , 81 , 85

Type.

Jacqueshuberia quinquangulata Ducke

Description.

Small trees or shrubs, unarmed. Stipules pinnate. Leaves bipinnate; pinnae and leaflets opposite, (2) 4-30 pairs of pinnae, 7-80 pairs of leaflets per pinna. Inflorescences terminal racemes, elongated or corymbiform; bracts and bracteoles setaceous, caducous. Flowers bilaterally symmetrical; hypanthium cupulate or campanulate, slightly ribbed; sepals 5, free; petals 5, yellow or dark purplish red, ovate, slightly unequal, sessile, lacking a claw; androecium monomorphic, stamens 10, joined in lower part; pollen in monads, associated with viscin threads, coarsely reticulate; ovary sessile, stigma oblique capitate. Fruit a dehiscent, linear, compressed legume, ribbed on the edges, the two ligneous valves coiling backwards from the apex at dehiscence, 4-8-seeded. Seeds oblong-ellipsoid, compressed.

Chromosome number.

Unknown.

Included species and geographic distribution.

Seven species across north-western South America, where two are endemic in Amazonian Brazil, two in Venezuelan Guayana, one in Guyana, one in Colombia and one in Peru (Fig. 85 ).

Ecology.

White sand forests of the Amazon basin, montane forests on sandstone and savannas in the Guiana Shield.

Etymology.

The generic name honours Jacques E. Huber (1867-1914), a Swiss botanist who explored the Amazon region.

Human uses.

Potentially of interest as an ornamental because of its wide range of flower colour, including red, purple, and yellow.

Notes.

Jacqueshuberia is characterised by the combination of foliaceous and pinnate stipules, bipinnate leaves, the pinnae and leaflets opposite, flowers bilaterally symmetrical with a cupular hypanthium and ten exserted stamens. The fruits are dehiscent, linear, with 4-8 seeds. The genus was last revised by Silva and Graham (1980), including a key to all species. Four species were subsequently described ( Cowan 1985; Barneby 1990; Stergios and Berry 1996).

Taxonomic references.

Barneby (1990); Cowan (1985); Ducke (1922); Silva and Graham (1980); Stergios and Berry (1996).

Figures

Figure 79. Vegetative morphology of Sclerolobieae A Moldenhawera nutans L. P. Queiroz, G. P. Lewis & Allkin shrubby individual in a Restinga sand dune field B Diptychandra aurantiaca (Mart.) Tul. tree in a Caatinga seasonally dry setting C Arapatiella psilophylla (Harms) R. S. Cowan flowering tree D Tachigali amplifolia (Ducke) Barneby large, buttressed tree E Jacqueshuberia purpurea Ducke pinnate stipule F leaf G detail of a leaf H Tachigali rugosa (Mart. ex Benth.) Zarucchi & Pipoly leaf with characteristic inversely symmetrical leaflets I, J Tachigali sp. details of leaf domatia K, L variation in stipule shape. Photo credits A, C, E-L D Cardoso B RT Queiroz https: // rubens-plantasdobrasil. blogspot. com / D I Huamantupa.

Figure 80. Floral morphology of Sclerolobieae A Moldenhawera lushnathiana Yakovlev highly branched inflorescence B Moldenhawera nutans L. P. Queiroz, G. P. Lewis & Allkin flowering branch, showing the typical navicular leaves with rust-coloured leaflet abaxial surface C flowers D Diptychandra aurantiaca (Mart.) Tul. flowering branch E inflorescence F Arapatiella psilophylla (Harms) R. S. Cowan inflorescences G flowers H Jacqueshuberia purpurea Ducke flower I Tachigali macrostachya Huber candelabrum-like inflorescences J Tachigali amarumayu Huamantupa, H. C. Lima & D. B. O. S. Cardoso densely paniculate inflorescences K Tachigali paraensis (Huber) Barneby radially symmetrical flowers L Tachigali paniculata Aubl. bilaterally symmetrical flowers M Tachigali macrostachya bilaterally symmetrical flowers. Photo credits A LP Queiroz B, C, F, G, I, K-M D Cardoso J I Huamantupa D, E RT Queiroz https: // rubens-plantasdobrasil. blogspot. com / H M Cohn-Haft.

Figure 81. Fruit morphology of Sclerolobieae A Moldenhawera polysperma (Vell.) Stellfeld old fruit valves B Diptychandra aurantiaca (Mart.) Tul. fruits C fruit opened showing the characteristic winged seed D Arapatiella psilophylla (Harms) R. S. Cowan immature fruit E Jacqueshuberia purpurea Ducke immature fruits F Tachigali macrostachya Huber immature fruits G Tachigali rugosa (Mart. ex Benth.) Zarucchi & Pipoly mature fruits. Photo credits A C Vivas B, C RT Queiroz https: // rubens-plantasdobrasil. blogspot. com / D-F D Cardoso G LP Queiroz.

Figure 85. Distribution of Jacqueshuberia based on quality-controlled digitised herbarium records. See Suppl. material 1 for the source of occurrence data.