Abstract
A new species of Octomeria was found during an orchid research expedition in the southern Ecuadorian Amazon. Octomeria jimenezii is described and illustrated, and information on its distribution, habitat and conservation status is provided. The newly proposed taxon is morphologically similar to O. pacii, from which it differs by the lower lateral lobes, with an obtuse to subacute angle to the anterior margin.
References
- Brown, R. (1813) Octomeria graminifolia R.Br. In: Aiton, W. (Ed.) Hortus Kewensis, 2nd edition, vol. 5. London: Richard Taylor and Co., pp. 211.
- Burret, K.E. (1937) Vochysia duquei. Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem 13: 498.
- Daly, D.C., Neill, D. & Martínez-Habibe, M.C. (2012) An ecologically significant new species of Dacryodes from the northern Andes. Studies in neotropical Burseraceae XV. Brittonia 64: 49–56. https://doi.org/10.1007/s12228-011-9206-0
- Dunsterville, G.C.K. & Garay, L.A. (1976) Venezuelan Orchids Illustrated, 6. Andre Deutsch Ltd., London, 463 pp.
- Forster, W. (2007) Estudo taxonômico das espécies com folhas planas a conduplicadas do gênero Octomeria R.Br. (Orchidaceae). Ph.D. Thesis, Universidade de São Paulo, São Paulo, 270 pp.
- Forster, W., Castro, V. & Barros, F. (2012) Three new species of Octomeria (Orchidaceae: Pleurothallidinae) from northern South America. Kew Bulletin, 67: 487–493. https://doi.org/10.1007/s12225-012-9394-0
- Karremans, A.P., Aguilar-Sandí, D., Artavia-Solís, M., Cedeño-Fonseca, M., Chinchilla, I.F., Gil-Amaya, K., Rojas-Alvarado, G., Solano-Guindon, N. & Villegas-Murillo, J. (2019) Nomenclatural notes in the Pleurothallidinae (Orchidaceae): miscellaneous. Phytotaxa 406: 259–270. https://doi.org/10.11646/phytotaxa.406.5.1
- Linnaeus, C. (1763) Species plantarum, exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas. Tomus II. 2: 1353Luer, C.A. (1975) Icones Pleurothallidinarum (Orchidaceae). Pleurothallis of Ecuador III. Selbyana, 1: 220–303. https://doi.org/10.5962/bhl.title.65726
- Luer, C.A. (1986) Icones Pleurothallidinarum I. Systematics of the Pleurothallidinae (Orchidaceae). Monographs in Systematic Botany from Missouri Botanical Garden, 1: 1–81.
- Luer, C.A. (2002) Miscellaneous new species in the Pleurothallidinae (Orchidaceae). Selbyana, 23: 1–45. https://doi.org/10.3100/hpib.v23iss1.2018.n6
- Luer, C.A. (2010) Icones Pleurothallidinarum XXXI. Lepanthes of Bolivia, Systematics of Octomeria Species North and West of Brazil, Addenda: New Species of Brachionidium, Lepanthes, Masdevallia, Octomeria, Platystele, Pleurothallopsis, and Porroglossum. Corrigenda. Monographs in Systematic Botany from Missouri Botanical Garden, 120: 1–154.
- Pridgeon, A.M., Solano, R. & Chase, M.W. (2001) Phylogenetic relationships in subtribe Pleurothallidinae (Orchidaceae): combined evidence from nuclear and plastid DNA sequences. American Journal of Botany 88: 2286–2308. https://doi.org/10.2307/3558390
- Pridgeon, A.M. (2006) Octomeria. In: Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (Eds.) Genera Orchidacearum, 4, Epidendroideae (part 1), Oxford University Press, Oxford, pp. 375–378. https://doi.org/10.1093/oso/9780198507123.001.0001
- Reichenbach, H.G. (1883) New garden plants: Salvia discolor, Odontoglossum pescatorei, Masdevallia brevis. Gardeners’ Chronicle, new series 20: 588.
- Rolfe, R.A. (1890) The Genus Scaphosepalum Pfizter. Journal of Botany, British and Foreign 28: 136.
- Ruíz, L.H. & Pavon, J.A. (1798) Systema vegetabilium florae Peruvianae et Chilensis. Prodromus, 91.
- Santos, T., Toscano de Brito, A. & Smidt, E.C. (2020) Octomeria (Orchidaceae: Pleurothallidinae) no estado do Paraná, Brasil. Rodriguésia 71: 1–37. https://doi.org/10.1590/2175-7860202071026
- Vélez-Abarca, L., Jiménez, M.M. & Baquero, L.E. (2021) Two new species of Octomeria (Pleurothallidinae) from Cordillera del Cóndor, Zamora Chinchipe, Ecuador. Lankesteriana 21: 33–44. https://doi.org/10.15517/lank.v21i1.46777