A new species of Pleurothallis (Pleurothallidinae) from the P. talpinaria complex, with notes on comparative floral morphology and pollination ecology
DOI:
https://doi.org/10.15517/zzdx7h51Keywords:
Andean orchids, Diptera, Pleurothallis gracilicolumna, Pleurothallis jostii, Pleurothallis talpinaria, Pleurothallis trimeroglossa, SylvicolaAbstract
A new species of Pleurothallis subgenus Talpinaria, discovered in the department of Tolima, Central Andes of Colombia, is described, illustrated, and discussed. The new species, Pleurothallis vallejoi is compared with P. talpinaria from Colombia and Venezuela, P. trimeroglossa from Peru and Ecuador, P. jostii, presumed to occur in Ecuador, and P. gracilicolumna from Colombia. The new species is distinguished from the previous ones by a lip with subquadrate lateral lobes, with narrowly elliptical basal auricles, and a callus that is elongated, thin, and slightly elevated, with the median lobe occupying almost half of the total lip length. Additionally, the pollination mechanism of the P. talpinaria complex is described and discussed.
References
Ackerman, J. D., & Collaborators. (2014). Orchid flora of the Greater Antilles. Botanical Garden Press.
Borba, E. L., & Semir, J. (1998). Wind-assisted fly pollination in three Bulbophyllum (Orchidaceae) species occurring in Brazilian “campos rupestres”. Lindleyana, 13, 203–218.
Catling, P. M. (1990). Auto-pollination in the Orchidaceae. In J. Arditti (Ed.), Orchid Biology: Reviews and Perspectives V (pp. 121–158). Timber Press.
Damián-Parizaca, A., Monteros, M. F., Coayla Rimachi, D., Walston, J., & Mitidieri-Rivera, N. (2025). A new species of Pleurothallis (Pleurothallidinae, Orchidaceae) from the historic sanctuary of Machupicchu, Perú. PhytoKeys, 254, 29–40. https://doi.org/10.3897/phytokeys.254.142116
Dodson, C. H. (1962). The importance of pollination in the evolution of the orchids of tropical America. American Orchid Society Bulletin, 31, 525–534.
Dodson, C. H. (1965). Agentes de polinización y su influencia sobre la evolución en la familia Orquidacea. Universidad Nacional Amazonia Peruana, Instituto General de Investigaciones.
Duque, O. (1993). Polinización en Pleurothallis. Orquideología, 19, 55–69.
Harvard University. (2025). Harvard University Herbaria & Libraries. Retrieved from https://huh.harvard.edu [Accessed on 13.01.2025].
Karremans, A. P. (2016). Genera Pleurothallidinarum: An updated phylogenetic overview of Pleurothallidinae. Lankesteriana, 16(2), 219–241.
Karremans, A. P. (2023). Demystifying orchid pollination: Stories of sex, lies and obsession. Kew Publishing.
Karremans, A. P., & Díaz-Morales, M. (2019). The Pleurothallidinae: Extremely high speciation driven by pollinator adaptation. In A. M. Pridgeon & A. R. Arosemena (Eds.), Proceedings of the 22nd World Orchid Conference, vol. 1 (pp. 363‒388). Guayaquil, Ecuador: Asociación Ecuatoriana de Orquideología.
Karremans, A. P., & Vieira-Uribe, S. (2020). Pleurothallids: Neotropical Jewels, Volume I. Imprenta Mariscal.
Karremans, A. P., Moreno, J. S., Gil-Amaya, K., Gutiérrez Morales, N., Espinosa, F., Mesa, S., Restrepo, E., Rincón-González, M., Serna, A., Sierra-Ariza, M., & Vieira-Uribe, S. (2023). Colombian Orchidaceae: A catalogue of the Pleurothallidinae. Lankesteriana, 23(2), 181–400.
Karsten, G. K. W. H. (1859). Florae Columbiae terrarumque adjacentium specimina selecta in peregrinatione duodecim annorum observata delineavit et descripsit (pp. 153–155). Typis Fratum Unger.
Luer, C. A. (1986). Icones Pleurothallidinarum III: Systematics of Pleurothallis. Monographs in Systematic Botany from Missouri Botanical Garden, 20, 1–109.
Luer, C. A. (1988). A revision of some sections of subgenus Pleurothallis. Lindleyana, 3(3), 133–149.
Luer, C. A. (1998). Icones Pleurothallidinarum XVII. Systematics of subgen. Pleurothallis sect. Abortivae, sect. Truncatae, sect. Pleurothallis, subsect. Acroniae, subsect. Pleurothallis, subgen. Dracontia, subgen. Unciferia. Monographs in Systematic Botany from Missouri Botanical Garden, 72, 1–122.
Luer, C. A. (2004). Icones Pleurothallidinarum XXVI. Pleurothallis subgenus Acianthera and three allied subgenera. A second century of new species of Stelis of Ecuador. Epibator, Ophidion, Zootrophion. Monographs in Systematic Botany from the Missouri Botanical Garden, 95, 1–265.
Luer C.A. (2005). Icones Pleurothallidinarum XXVII. Dryadella and Acronia sect. Macrophyllaceae-Fasciculatae. Monographs in Systematic Botany, 103, 1–311.
Moreno, J. S., Galindo-Tarazona, R., Alegría-Valencia, M., Wilson, M., & Zuluaga Tróchez, A. (2023). A new species of Pleurothallis (Pleurothallidinae) from the southwestern Andes of Colombia in the National Natural Park Farallones de Cali. Lankesteriana, 23(2), 401–407.
Pridgeon, A. M. (2005). Pleurothallis. In: A. M. Pridgeon, P. Cribb, M.W. Chase, & F. N. Rasmussen (Eds.), Genera Orchidacearum, volume 4, Epidendroideae (part 1) (pp. 385–390). Oxford: Oxford University Press.
Pridgeon, A. M., Solano, R., & Chase, M. W. (2001). Phylogenetic relationships in Pleurothallidinae (Orchidaceae): Combined evidence from nuclear and plastid DNA sequences. American Journal of Botany, 88, 2286–2308.
Pupulin, F., Aguilar, J., Belfort-Oconitrillo, N., Díaz-Morales, M., & Bogarín, D. (2021). Florae Costaricensis subtribui Pleurothallidinis (Orchidaceae) Prodromus II: Systematics of the Pleurothallis cardiothallis and P. phyllocardia groups, and other related groups of Pleurothallis with large vegetative habit. Harvard Papers in Botany, 26(1), 203–295. https://doi.org/10.3100/hpib.v26iss1.2021.n14
The Kew Data Portal. (2025). Royal Botanic Gardens, Kew. Retrieved from http://www.data.kew.org [Accessed on 13.01.2025]
Reichenbach, H. G. (1886). Orchideae describuntur. Flora, 69(35), 547–562.
Schlechter, F. R. R. (1921). Pleurothallis trimeroglossa Schltr. Repertorium Specierum Novarum Regni Vegetabilis Beih, 9, 78.
Schweinfurth, C. (1942). Orchidaceae Peruvianae. Botanical Museum Leaflets, Harvard University, 10, 173–216.
Sierra-Ariza, M. A. (2023). Two new species of Pleurothallis (Pleurothallidinae) subsection Macrophyllae-Fasciculatae from the Central Andes of Colombia. Lankesteriana, 23(1), 35–44. https://doi.org/10.15517/lank.v23i1.54321
Sierra-Ariza, M. A. (2024). Pleurothallis cop-biodiversitatis (Pleurothallidinae), a new species from Colombia. Lankesteriana, 24(3), 259–265. https://doi.org/10.15517/lank.v24i3.61038
Sierra-Ariza, M. A., Rincón-González, M., Wilson, M., & Villanueva, B. (2022). Una nueva especie de Pleurothallis (Pleurothallidinae) subsección Macrophyllae-Fasciculatae para la región Andina colombiana. Lankesteriana, 22(1), 25–35. http://dx.doi.org/10.15517/lank.v22i1.50823
Wilson, M. (2018). Pleurothallis gracilicolumna (Orchidaceae, Pleurothallidinae), a new species from Colombia related to P. talpinaria, P. trimeroglossa, and P. jostii. Orquideología, 35(1), 31–51.
Wilson, M., Baquero R., L., Driessen, W., Dupree, K., Gil, K., Portilla, J., & Salas Guerrero, M. (2017). A clarification of the distinction between Pleurothallis talpinaria and Pleurothallis trimeroglossa (Orchidaceae: Pleurothallidinae) and an allied new species from Ecuador. Lankesteriana, 17(2), 133–151. http://dx.doi.org/10.15517/lank.v17i2.29803
Wilson, M., Baquero R., L., Dupree, K., Jiménez, M. M., LeBlanc, C. M., Merino, G., Portilla, J., Salas Guerrero, M., Tobar Suárez, F., & Werner, J. D. (2016). Three new species of Pleurothallis (Pleurothallidinae; Orchidaceae) in subsection Macrophyllae-Fasciculatae from northern South America. Lankesteriana, 16(3), 349–366. https://doi.org/10.15517/lank.v16i3.27314
Wilson, M., Belle, C., Dang, A., Hannan, P., Kellogg, L., Kenyon, C., Low, H., Mochizuki, A., Nguyen, A., Sheade, N., Shan, L., Shum, A., Stayton, T., Volz, C., Vosburgh, B., Wellman, H., & Woolley, M. A. (2013). A preliminary phylogenetic analysis of Pleurothallis sensu lato based upon nuclear and plastid sequences. Lankesteriana, 13(1–2), 139. http://dx.doi.org/10.15517/lank.v0i0.11568
Wilson, M., Belle, C., Dang, A., Hannan, P., Kenyon, C., Low, H., Stayton, T., & Woolley, M. A. (2011). A phylogenetic analysis of the genus Pleurothallis, with emphasis on Pleurothallis subsection Macrophyllae-Fasciculatae, using nuclear ITS and chloroplast DNA sequencing. Lankesteriana, 11(3), 369. http://dx.doi.org/10.15517/lank.v11i3.18304
Wilson, M., Larsen, B., Moreno, J. S., Ward, R., Riksen, J., Piña, L., Sierra-Ariza, M. A., Jiménez, M., Rincón-González, M., Galindo-Tarazona, R., Garzón, H., & Haelterman, D. (2022). New species of Pleurothallis (Orchidaceae: Pleurothallidinae), a new country record, and labellar morphology in the P. cardiostola–P. lilijae complex of subsection Macrophyllae-Fasciculatae. Harvard Papers in Botany, 27(2), 187–220. https://doi.org/10.3100/hpib.v27iss2.2022.n10
Wilson, M., Zhao, K., Hampson, H., Frank, G., Romelroux, K., Jiménez, M. M., Tobar, F., Larsen, B., & Perez, A. (2018). A new species of Pleurothallis (Orchidaceae: Pleurothallidinae) in subsection Macrophyllae-Fasciculatae with a unique, highly reduced, morphologically distinct labellum. Lankesteriana, 18(3), 217–230. https://doi.org/10.15517/lank.v18i3.35495
Published
Issue
Section
License
Copyright (c) 2025 Lankesteriana: International Journal on Orchidology
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 Unported License.
According to the Open Access policy promoted by the University of Costa Rica, all the papers published by Lankesteriana are licensed under the Creative Commons copyright and can be downloaded free of charge. The journal holds copyright and publishing rights under the CC BY-NC-ND 3.0 CR license.
Before the publication of the materials submitted by the author(s) in LANKESTERIANA, the author(s) hereby assign all rights in the article to the Lankester Botanical Garden.
