Wallaceodendron Koord., Meded. Lands Plantentuin 19: 630. 1898.

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

publication ID	https://dx.doi.org/10.3897/phytokeys.240.101716
persistent identifier	https://treatment.plazi.org/id/6A49A27C-CC22-728B-BE8F-5EA8D3F2BC32
treatment provided by	PhytoKeys by Pensoft
scientific name	Wallaceodendron Koord., Meded. Lands Plantentuin 19: 630. 1898.
status

Treatment

Wallaceodendron Koord., Meded. Lands Plantentuin 19: 630. 1898. View in CoL

Figs 226 View Figure 226 , 227 View Figure 227 , 228 View Figure 228 , 229 View Figure 229

Type.

Wallaceodendron celebicum Koord.

Description.

Unarmed medium-sized to large trees up to 45 m. Stipules caducous. Leaves bipinnate, extrafloral nectaries between pinnae pairs; pinnae 2-3 pairs; leaflets 3-6 pairs per pinna, opposite. Inflorescence a solitary or paired raceme, peduncle 5-16 cm long. Flowers uniform, bisexual, 5-merous, subtended by ca. 2 mm long, triangular, caducous bracts; calyx gamosepalous, valvate; corolla gamopetalous, valvate; stamens numerous, united into a tube at the base, staminal tube and corolla tube shortly united at the base; pollen in 16-celled polyads with a perforated tectum; ovary solitary. Fruit a woody legume, flat, straight to slightly curved, tardily dehiscent, not segmented, not reddish inside; exocarp thin, crustaceous, mesocarp woody, endocarp chartaceous loosening and at dehiscence forming small, closed envelopes around each seed. Seeds strongly flattened, circular, unwinged, with U-shaped pleurogram, without aril; testa with a thick sclerotesta.

Chromosome number.

2 n = 26 ( Goldblatt 1981a; Cannon et al. 2015).

Included species and geographic distribution.

Monospecific ( W. celebicum ), endemic to Malesia [North Sulawesi (Celebes) and the Philippines] (Fig. 229 View Figure 229 ).

Ecology.

Wallaceodendron can be found along seashores and inland in primary rainforest to 850 m elevation.

Etymology.

Named after the British botanist Alfred Russel Wallace (1823-1913), explorer, zoologist, and plant collector ( Quattrocchi 1999).

Human uses.

Wallaceodendron celebicum [ banúyo (=ironwood), derham mahogany] is used for furniture, flooring, light construction, telegraph poles, music instruments, decorative veneers, carvings and sculptures ( Sosef et al. 1998; Nielsen 1992; Lewis and Rico Acre 2005).

Notes.

Fosberg (1960) commented on the possibility of combining Wallaceodendron with Serianthes based on the nearly identical flowers, but argued to keep them separate based on the unique features of fruit dehiscence in Wallaceodendron with small, closed envelopes of endocarp around each seed. These propagules are adapted to wind and water dispersal ( Augspurger 1989; Nielsen 1992).

Taxonomic references.

Nielsen (1981a, 1992); Nielsen et al. (1983a); Sosef et al. (1998).