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Issue: Vol. 702 No. 1: 22 May 2025
Type: Article
Published: 2025-05-22
DOI: 10.11646/phytotaxa.702.1.7
Page range: 93-101
Abstract views: 471
PDF downloaded: 30

Orinoquia brasiliensis (Apocynaceae, Asclepiadoideae), a new endemic species and the first record of the genus in Brazil

Instituto de Biociências, Laboratório de Estudos Integrados de Plantas (LEIP), Universidade Federal de Mato Grosso, 78068-900, Cuiabá, Brazil
Instituto de Biociências, Laboratório de Estudos Integrados de Plantas (LEIP), Programa de Pós-Graduação em Biologia Vegetal (PPGBV), Universidade Federal de Mato Grosso, 78068-900, Cuiabá, Brazil
Departamento de Biología Comparada, Laboratorio de Plantas Vasculares, Facultad de Ciencias, Universidad Nacional Autónoma de México, 70-282, 04510, Ciudad de México, México
Cerrado Corona Gonolobinae Mato Grosso Eudicots

Abstract

A new species of Orinoquia (Gonolobinae, Apocynaceae) from the state of Mato Grosso, in the Central-West region of Brazil is described and illustrated, making this the first record of this genus in the country. Orinoquia brasiliensis is morphologically similar to O. yanomamica, which is known to occur only in Venezuela, but differs mainly by branches only with long simple trichomes, longer pedicels and sepals, and ovate corolla lobes; the follicles of the genus are here described for the first time. The new species is endemic to the Cerrado and known from only one population; therefore, its conservation status is suggested as Data Deficient (DD), according to IUCN criteria. A distribution map with the occurrence of the two known Orinoquia species is presented, as well as taxonomic comments, images, an illustration, a comparative table with the main features to distinguish the genus, and an identification key to the Gonolobinae of Mato Grosso.

References

  1. Alvarado-Cárdenas, L.O. (2021) Talayotea (Apocynaceae: Asclepiadoideae, Gonolobinae), un género nuevo y endémico de México. Phytoneuron 62: 1–18.
  2. Alvarado-Cárdenas, L.O., Díaz-Mota, S. & Pío-León, J.F. (2024) Una nueva y diminuta Matelea (Apocynaceae) de Veracruz, México. Botanical Sciences 102 (2): 609–615. https://doi.org/10.17129/botsci.3425
  3. Aublet, J.B.C.F. (1775) Histoire des Plantes de la Guiane Françoise Tome 1. Pierre-François Didot, London, 621 pp.
  4. BRASIL (2016) Plano de Manejo da Estação Ecológica da Serra das Araras. Brasília, DF, 259 pp.
  5. Decaisne, J. (1844) Asclepiadaceae. In: Candolle, A.P. de (Ed.) Prodromus Systematis Naturalis Regni Vegetabilis, vol. 8. Fortin, Masson & Cie., Paris, pp. 490–665.
  6. González-Martínez, C.A., Lozada-Pérez, L. & Alvarado-Cárdenas, L.O. (2023) Four new species of Matelea (Apocynaceae: Asclepiadoideae) endemic to Mexico. Kew Bulletin 78 (4): 519–531. https://doi.org/10.1007/s12225-023-10121-z
  7. González-Martínez, C.A., Lozada-Pérez, L., Olson, M.E. & Alvarado-Cárdenas, L.O. (2024) Systematics of Urostephanus: resurrection of a Mesoamerican taxon of Gonolobinae (Apocynaceae, Asclepiadoideae), with eight new combinations. Acta Botanica Mexicana 131: e2302. https://doi.org/10.21829/abm131.2024.2302
  8. Harris, J. & Harris, M. (2001) Plant identification terminology—An illustrated glossary. Spring Lake Publishing, Payson, 216 pp.
  9. IUCN (2022) Guidelines for using the IUCN Red List Categories and Criteria, version 15.1. Prepared by the Standards and Petitions Committee. Available from: http://cmsdocs.s3.amazonaws.com/RedListGuidelines.pdf (accessed 30 July 2024)
  10. Jiménez, J.E., Méndez, M. & Obregón-Carrillo, A. (2023) A new species of Matelea (Apocynaceae, Asclepiadoideae) from the Península de Nicoya, Guanacaste, Costa Rica. Novon 31 (1): 88–94. https://doi.org/10.3417/20238103
  11. JSTOR (continuously updated) (2024) JSTOR Global Plants. Available from: http://plants.jstor.org/ (accessed 15 June 2024)
  12. Keller, H.A. & Liede-Schumann, S. (2020) Caa, a new South American genus of Gonolobinae (Apocynaceae: Asclepiadeae: Asclepiadoideae). Lilloa 57 (1): 81–88. https://doi.org/10.30550/j.lil/2020.57.1/6
  13. Köppen, W. (1948) Climatologia. Fondo de Cultura Econômica, México, 496 pp.
  14. Krings, A., Thomas, D.T. & Xiang, Q.Y. (2008) On the generic circumscription of Gonolobus (Apocynaceae, Asclepiadoideae): Evidence from molecules and morphology. Systematic Botany 33 (2): 403–415. https://doi.org/10.1600/036364408784571527
  15. Kunth, K.S. (1818) Apocyneae. In: Humboldt, F.W.H.A. & Bonpland, A.J.A. (Eds.) Nova Genera et Species Plantarum, vol. 3. Librairie Graeco-Latino-Germanieae, Paris, pp. 188–235.
  16. Kunze, H. (1995) Floral morphology of some Gonolobeae (Asclepiadaceae). Botanische Jahrbucher 117 (1): 211–238.
  17. León, G.S. (2005) La cuenca del río Orinoco: visión hidrográfica y balance hídrico. Revista Geográfica Venezolana 46 (1): 75–108.
  18. Liede, S. & Kunze, H. (1993) A descriptive system for corona analysis in Asclepiadaceae and Periplocaceae. Plant Systematics and Evolution 185: 275–284. https://doi.org/10.1007/BF00937663
  19. Liede-Schumann, S. & Morillo, G.N. (2019) Subtribe Gonolobinae Liede. In: Kadereit, J.W. & Bittrich, V. (Eds.) Flowering Plants. Eudicots, The Families and Genera of Vascular Plants, vol. 15. Springer International Publishing AG, part of Springer Nature, Cham, pp. 207–411. https://doi.org/10.1007/978-3-319-93605-5
  20. Malme, G.O.A. (1905) Adnotationes de nonnullis Asclepiadaceis austroamericanis. Arkiv för Botanik 4 (14): 1–19.
  21. Mangelsdorff, R.D., Meve, U. & Liede-Schumann, S. (2016) Phylogeny and circumscription of Antillean Anemotrochus, gen. nov., and Tylodontia (Apocynaceae: Asclepiadoideae: Gonolobinae). Willdenowia 46 (3): 443–474. https://doi.org/10.3372/wi.46.46311
  22. McDonnell, A., Parks, M. & Fishbein, M. (2018) Multilocus phylogenetics of New World milkweed vines (Apocynaceae, Asclepiadoideae, Gonolobinae). Systematic Botany 43 (1): 77–96. https://doi.org/10.1600/036364418X697021
  23. Morillo, G. (2013) Aportes al conocimiento de las Gonolobinae II (Apocynaceae, Asclepiadoideae). Pittieria 37: 115–154.
  24. Morillo, G. (2015) Aportes al conocimiento de las Gonolobinae parte III (Apocynaceae, Asclepiadoideae). Pittieria 39: 191–258.
  25. Morillo, G. (2016) Nuevas especies y nuevas combinaciones en las Gonolobinae (Apocynaceae, Asclepiadoideae, Asclepiadeae) de Centro y Sudamérica. Lilloa 53 (1): 89–106.
  26. Morillo, G. (2023a) Aportes al conocimiento de las Gonolobinae (Apocynaceae-Asclepiadoideae) parte IV. Memoria de la Fundación La Salle de Ciencias Naturales 81 (190): 45–90.
  27. Morillo, G. (2023b) Aportes al conocimiento de las Gonolobinae (Apocynaceae, Asclepiadoideae) Parte V. Chthamalia, Meveampelos gen. nov., Phaeostemma, Polystemma, Ptycanthera. Memoria de la Fundación La Salle de Ciencias Naturales 81 (191): 37–90.
  28. Morillo, G., Fontella Pereira, J. & Dória Barbosa, M.V. (2013) Austrochthamalia (Apocynaceae, Asclepiadoideae, Gonolobinae), un género nuevo segregado de Chthamalia Decne. Revista de Biología Neotropical 10 (1): 1–8. https://doi.org/10.5216/rbn.v10i1.27827
  29. Morillo, G., Cáceres Moral, S.A. & Keller, H.A. (2016) Cristobalia, un nuevo género Sudamericano de Gonolobinae (Apocynaceae, Asclepiadoideae, Asclepiadeae). Pittieria 40 (1): 122–143.
  30. Morillo, G., Morais, I.L. & Farinaccio, M.A. (2017) Matelea atrolingua, una nueva Apocynaceae cuyos lóbulos corolinos semejan la lengua de un mamífero muerto. Iheringia Série Botânica 72 (3): 319–324. https://doi.org/10.21826/2446-8231201772301
  31. Morillo, G., Meve, U. & Liede-Schumann, S. (2023) A new species of Matelea (Apocynaceae, Gonolobinae) from Bolivia and an assessment of Matelea in Bolivia. Novon 31 (1): 126–131. https://doi.org/10.3417/2023815
  32. Qgis.org (2024) QGIS User Guide. Available from: https://docs.qgis.org/3.34/en/docs/user_manual/ (accessed 20 August 2024)
  33. Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1974) Vascular Plant Systematics. Harper and Row, New York, 891 pp.
  34. Schmidt, N., Geier, P., Mannschatz, T. & Matschullat, J. (2009) The Cerrado biome in central Brazil–natural ecology and threats to its diversity. Forum Geoökologie 20 (2): 44–50.
  35. Templeton, A. (1989) The meaning of species and speciation: A genetic perspective. In: Otte, D. & Endler, J.A. (Eds.) Speciation and its Consequences. Sinauer Associates, Sunderland, pp. 3–27.
  36. Thiers, B. (2024) Index Herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/science/ih/ (accessed 26 August 2024)
  37. Woodson, R.E. Jr. (1941) The North American Asclepiadaceae I. Perspective of the genera. Annals of the Missouri Botanical Garden 28 (2): 193–244. https://doi.org/10.2307/2394270

How to Cite

Coutinho, T.S., Koch, A.K. & Alvarado-Cárdenas, L.O. (2025) Orinoquia brasiliensis (Apocynaceae, Asclepiadoideae), a new endemic species and the first record of the genus in Brazil. Phytotaxa 702 (1): 93–101. https://doi.org/10.11646/phytotaxa.702.1.7