Marlimorimia L.P. Queiroz, L.M. Borges, Marc.F. Simon & P.G. Ribeiro, PhytoKeys 205: 252-253. 2022.

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

Marlimorimia L.P. Queiroz, L.M. Borges, Marc.F. Simon & P.G. Ribeiro, PhytoKeys 205: 252-253. 2022.

Figs 172 , 173 , 177

Newtonia sect. Neonewtonia Burkart, Fl. Il. Catarin. fasc. LEGU: 285. 1979. Type: Newtonia nitida (Benth.) Brenan [≡ Piptadenia nitida Benth. (= Marlimorimia contorta (DC.) L.P. Queiroz & P.G. Ribeiro)]

Type.

Marlimorimia contorta (DC.) L.P. Queiroz & P.G. Ribeiro [≡ Acacia contorta DC.]

Description.

Trees; indumentum composed of simple trichomes; brachyblasts absent; branches and leaves unarmed, not odoriferous. Stipules caducous. Leaves bipinnate; extrafloral nectaries on the lower half of the petiole; pinnae (2) 5-many pairs, opposite; leaflets (6) 10-many pairs, opposite, mostly oblong to linear, rarely rhomboid. Inflorescence units cylindrical spikes, arranged in terminal pseudoracemes or clustered in efoliate nodes below the leaves. Flowers 5-merous, white to yellowish or greenish; calyx gamosepalous; corolla gamopetalous; stamens 10, anthers with an apical gland; pollen in polyads with 8, 12 or 16 grains; ovary included or exserted from the corolla. Fruit a follicle; margins straight, rarely sinuous and constricted where the seeds abort. Seeds flat compressed, dark, narrowly winged, pleurogram absent.

Chromosome number.

Unknown.

Included species and geographic distribution.

Six species, three in eastern Brazil, one in northern South America and Costa Rica, one endemic to Colombia, and one endemic to Venezuela (Fig. 177 ).

Ecology.

All species of Marlimorimia occur in rainforests.

Etymology.

Marlimorimia honours the Rio de Janeiro Botanical Garden botanist, Dr. Marli Pires Morim.

Human uses.

Marlimorimia warmingii (Benth.) L.P. Queiroz & P.G. Ribeiro is used as firewood, timber, to make agricultural tools, and could be used as an ornamental and for ecological restoration ( Burkart 1979; Carvalho 2008). Bark extracts of M. contorta have healing properties ( Vieira et al. 2015).

Notes.

The genus was described to accommodate species that could not retain the name Pseudopiptadenia Rauschert, as it had to be synonymised under Pityrocarpa based on phylogenetic evidence (see below and Borges et al. 2022). Recognition of Marlimorimia is also supported by a suite of morphological features, such as extrafloral nectaries on the lower half of the petiole and spikes in fascicles arranged in a terminal pseudoraceme, or distributed in efoliate nodes below mature leaves.

Two species of the genus, Marlimorimia colombiana (Britton & Killip) L.P. Queiroz & Marc.F. Simon, from Colombia, and M. pittieri (Harms) L.P. Queiroz & L.M. Borges, from Venezuela, are poorly known and have been assigned to the genus based on the morphology of type specimens only ( Borges et al. 2022). Considering that morphological homoplasy is pervasive across mimosoid legumes, efforts should be made to expand knowledge on the distribution and morphological variation of these species, and to include them in molecular phylogenetic analyses.

Taxonomic references.

Barneby and Grimes (1984); Borges et al. (2022); Brenan (1955, 1963b); Lewis and Lima (1991); Lima (1985); Rauschert (1982).

Figures

Figure 172. Flowering branches in the Stryphnodendron clade A Gwilymia coriacea (Benth.) A. G. Lima, Paula-Souza & Scalon (Simon 3482) B Microlobius foetidus (Jacq.) M. Sousa & G. Andrade C Stryphnodendron adstringens (Mart.) Coville D S. gracile Rizzini & Heringer E Marlimorimia bahiana (G. P. Lewis & M. P. Lima) L. P. Queiroz & L. M. Borges F Pityrocarpa moniliformis (Benth.) Luckow & R. W. Jobson G Parapiptadenia blanchetii (Benth.) Vaz & M. P. Lima H Naiadendron duckeanum (Occhioni) A. G. Lima, Paula-Souza & Scalon (Simon 1457). Photo credits A, H MF Simon B T Iwane C, D H Moreira E LP Queiroz F D Cardoso G PG Ribeiro.

Figure 173. Habit and fruits in the Stryphnodendron clade A Marlimorimia psilostachya (DC.) L. P. Queiroz & Marc. F. Simon showing the tree habit B Stryphnodendron platyspicum Rizzini & Heringer (Simon 2017) showing the geoxyle subshrub habit C Gwilymia coriacea (Benth.) A. G. Lima, Paula-Souza & Scalon (Simon 3730) D Microlobius foetidus (Jacq.) M. Sousa & G. Andrade E Stryphnodendron rotundifolium Mart. fruit, manually opened revealing internal septa and seeds F Marlimorimia contorta (DC.) L. P. Queiroz & P. G. Ribeiro G Naiadendron duckeanum (Occhioni) A. G. Lima, Paula-Souza & Scalon (Pereira-Silva 15692) H Parapiptadenia rigida (Benth.) Brenan showing a yellow inflorescence and dehiscing fruit I Pityrocarpa leptostachya (Benth.) L. P. Queiroz & P. G. Ribeiro. Photo credits A R Aguilar B, C, E MF Simon D H Hulsberg F G Carvalho-Sobrinho G G Pereira-Silva H RT Queiroz https: // rubens-plantasdobrasil. blogspot. com / I LM Borges.

Figure 177. Distribution of Marlimorimia based on quality-controlled digitised herbarium records. See Suppl. material 1 for the source of occurrence data.