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Monograph
Published: 2022-09-13

An Updated Checklist of the Orchidaceae of Honduras

Mancomunidad de Municipios del Parque Nacional Montaña de Celaque MAPANCE, Gracias, Lempira, Honduras.
Tecnológico Nacional de México, Instituto Tecnológico de Chiná, Calle 11, Centro Chiná, 24050, Campeche, Mexico
Orquigonia, Centro de Rescate y Conservación de Orquídeas, Km 206, Ruta las Verapaces, Cobán, Alta Verapaz, Guatemala
Unidad de Recursos Naturales-Herbario CICY, Centro de Investigación Científica de Yucatán, A.C., Calle 43, No. 130 x 32 y 34, Chuburná de Hidalgo, 97205, Mérida, Yucatán, Mexico
Performance Seed, Lethbridge, Alberta, Canada
Central America Chiapas Highlands province floristics Mosquito province orchids Protected Natural Areas Monocots

Abstract

A comprehensive compilation of all currently recognized orchid species known from Honduras is presented. The checklist includes 604 taxa in 145 genera; 595 species, two subspecies and seven natural hybrids. Orchidaceae represents 7% of the flora of country and continues to be the plant family with the highest number of species in Honduras. The most species rich genera in the country are Epidendrum (76 species), Lepanthes (28), Stelis (26), Prosthechea (21), Habenaria (19), and Malaxis (17). Regarding the habit, 74% of the taxa are epiphytes, 20% are terrestrial, 1.5% are hemiepiphytes, 1.5% are lithophytes and 3% can be terrestrial and epiphytic. Most of the botanical collections in Honduras were made by foreign researchers between the 1920s and 1970s. Among the orchid specimens available for the current study, 44% were deposited in national herbaria and 46% in herbaria in the United States of America. The departments with more than 100 voucher specimens each are Atlántida, Comayagua, Cortés, Francisco Morazán, Lempira, and Santa Bárbara. Only 7% of Protected Natural Areas have more than 121 voucher specimens, 70% has less than 120 specimens, and remaining 23% have no available records at all. In some cases they have poor accessibility and inadequate road infrastructure. Honduras has 10 endemic orchid species, three distributed in the Mosquito province, four in the Chiapas Highlands province, and three shared by both provinces. The number of orchid taxa known to occur in Honduras may continue to increase as additional collection efforts are made. This further helps to fill in the knowledge gaps on the distribution patterns of orchids and other plant groups in Central America.

References

  1. Allen, P.H. (1958) A natural hybrid from Honduras. American Orchid Society Bulletin 27: 311–312.

  2. Ames, O. (1922) Orchidaceae Quaedam Americanae. Schedulae Orchidianae 1: 1–24.

  3. Ames, O. (1923) Orchidaceae Quaedam Americanae II. Schedulae Orchidianae 2: 1–38.

  4. Ames, O. (1932) A new Epidendrum from Spanish Honduras. Botanical Museum Leaflets, Harvard University 2: 1–3.

  5. Ames, O. (1933a) The Honduran species of Lepanthes. Botanical Museum Leaflets, Harvard University, Harvard University 1: 3–8.

  6. Ames, O. (1933b) A new Epidendrum from Honduras. Botanical Museum Leaflets, Harvard University, Harvard University 1: 1–3.

  7. Ames, O. (1934a) A contribution to our knowledge of the orchids of Spanish Honduras part I. Botanical Museum Leaflets, Harvard University 2: 73–84.

  8. Ames, O. (1934b) A contribution to our knowledge of the orchids of Spanish Honduras part II. Botanical Museum Leaflets, Harvard University 3: 17–36.

  9. Ames, O. & Correll, D.S. (1942) Some new or noteworthy Guatemalan orchids. Botanical Museum Leaflets, Harvard University 10: 61–112.

  10. Archila, F.L.M. (1998) Descripción de 6 nuevas especies del Género Lepanthes (SW.) de la familia Orchidaceae para Guatemala. Revista Guatemalensis 1: 1–35.

  11. Archila, F.L.M. (1999) Exploraciones Botánicas en Guatemala (parte I). Revista Guatemalensis 2: 14–15.

  12. Archila, F.L.M. (2002) Nuevas especies para la flora orquideológica guatemalteca. Revista Guatemalensis 5: 6–16.

  13. Bakte, S.P., Cascante-Marín, A. & Kelly, D.L. (2016) Epiphytes in Honduras: a geographical analysis of the vascular epiphyte flora and its floristic affinities to other Central American countries. Tropical Ecology 57: 663–675.

  14. Barrance, A., Schreckenberg, K. & Gordon, J. (2009) Conservación mediante el uso: lecciones aprendidas en el bosque seco tropical mesoamericano. London: Overseas Development Institute, 141 pp.

  15. Bentham, G. (1842) Plantas Hartwegianas imprimis Mexicanas, G. Pamplin, London, 393 pp.

  16. Blanco, M.A., Carnevali, G., Whitten, W.M., Singer, R.B., Koheler, S. Williams, N.H., Ojeda, I, Neubig, K.M. & Endara, L. (2007) Generic realignments in Maxillariinae (Orchidaceae). Lankesteriana 7: 515–537. https://doi.org/10.15517/lank.v0i0.7935

  17. Bogarín, D., Karremans, A.P. & Fernández, M. (2018) Genus-level taxonomical changes in the Lepanthes affinity (Orchidaceae: Pleurothallidinae). Phytotaxa 340: 128–136. https://doi.org/10.11646/phytotaxa.340.2.2

  18. Braem, G.J. (1993) Studies in the Oncidiinae: discussion of some taxonomic problems with description of Gudrunia Braem, gen. nov., and reinstatement of the genus Lophiaris Rafinesque. Schlechteriana 4: 8–29.

  19. Burns-Balogh, P.E. (1981) Notas sobre nomenclatura del genero Schiedeella Schlechter (Orchidaceae). Orquídea 8: 37–40.

  20. Carnevali, G., Cetzal-Ix, W., Balam, R., Leopardi, C. & Romero-González, G.A. (2013) A combined evidence phylogenetic re-circumscription and a taxonomic revision of Lophiarella (Orchidaceae: Oncidiinae). Systematic Botany 38: 46–63. https://doi.org/10.1600/036364413X661926

  21. Carnevali, G., Pérez-García, E.A., Leopardi-Verde, C.L., Tapia-Muñoz, J.L., Cetzal-Ix, W.R., Ramírez-Morillo, I.M. & Romero-González, G.A. (2018) The Encyclia Ambigua Complex (Laeliinae, Orchidaceae), a synopsis and notes on Encyclia virens and Epidendrum alatum. Phytotaxa 372: 1–21. https://doi.org/10.11646/phytotaxa.372.1.1

  22. Cetzal-Ix, W., Carnevali, G. & Romero-González, G.A. (2016) Synopsis of the Trichocentrum-clade (Orchidaceae, Oncidiinae). Harvard Papers in Botany 21: 141–169. https://doi.org/10.3100/hpib.v21iss2.2016.n3

  23. Colwell, R.K. (2013) Estimates: statistical estimation of species richness and shared species from samples. Version 9.1.0 User´s guide. Available from: http://viceroy.eeb.uconn.edu/estimates/EstimateSPages/EstSUsersGuide/EstimateSUsersGuide.htm#SamplesAndSpecies (accessed 12 September 2022)

  24. Dorr, L.J., Pilz, G.E. & Boggan, J. (2009) The transfer of types from the Escuela Agrícola Panamericana to the U.S. National Herbarium in 1956 by Louis O. Williams. Taxon 58: 993–1001. https://doi.org/10.1002/tax.583030

  25. Dressler, R.L. & Pollard, G.E. (1971) Nomenclatural notes on the Orchidaceae – IV. Phytologia 21: 433–439.

  26. Dressler, R.L. (2009) Orchidaceae (In part). Flora Mesoamericana 7: 1–446. Available from: http://www.tropicos.org/docs/meso/orchidaceae.pdf (accessed 3 February 2021).

  27. Duchartre, P.É.S. (1862) Oncidium splendidum. Journal de la Société Impériale et Centrale d’Horticulture 8: 50.

  28. ESRI (1999) ArcView GIS 3.2. Environmental Systems Research Institute, Inc. New York.

  29. Fowlie, J.A. (1976) A new Mormodes for Honduras. Florida Orchidist 7: 145–148.

  30. Flores, E., Sánchez, A., Castellanos, N., Ávila, R., Zelaya, E. & Paz, G. (2012) Plan de Manejo Parque Nacional Montaña de Celaque periodo 2012-2016. Mancomunidad de Municipios del Parque Nacional Montaña de Celaque (MAPANCE), Instituto de Conservación Forestal (ICF), Deutsche Gesellschaft Fur Internationale Zusammenarbeit (GIZ), 173 pp. [http://icf.gob.hn/wp-content/uploads/2015/09/AP-Plan-de-Manejo-celaque.pdf]

  31. Garay, L.A. (1980) A generic revision of the Spiranthinae. Botanical Museum Leaflets, Harvard University 28: 278–425.

  32. Garay, L.A. & Kennedy, G.C. (1976) Rossioglossum williamsianum. Orchid Digest 40: 143.

  33. Hágsater, E. & Sánchez, L.M. (2004) The genus Epidendrum. A Fourth Century of New Species in Epidendrum. In: Hágsater, E. & Sánchez, L.M. (Eds.) Ichones Orchidacearum 7 (4). Herbario AMO, México, 204 pp.

  34. Hemsley, W.B. (1826) Botany III. Enumeration of the incompletae, monocotylodones, and cryptogamic vasculares, with descriptions of new species. In: Godman, F.D. & Salvin, O. (eds.) Biologia Centrali-American. R.H. Porter and Dulau & Co, London, 711 pp.

  35. Hemsley, W.B. (1879–1888) Botany. In: Godman, F.D. & Salvin, O. (eds.) Biologia Centrali-American. R.H. Porter and Dulau & Co, London, 498 pp.

  36. Hijmans, R.J., Cameron, S.E., Parra, J.L., Jones, P.G. & Jarvis, A. (2004) The WorldClim interpolated global terrestrial climate surfaces. Version 1.3.

  37. Hooker, W.J. (1828) Encyclia. Botanical Magazine 55. Academic Press, London, 255 pp.

  38. Hooker, W.J. (1841) Physurus vaginatus (Orchideae). Icones Plantarum 5: Tab 401–500.

  39. Instituto Nacional de Conservación y Desarrollo Forestal, Áreas Protegidas y Vida Silvestre (ICF) (2019) Mapa de Cobertura y Uso de la Tierra, Honduras año 2018. Organización de las Naciones Unidas para la Alimentación y la Agricultura (FAO), Tegucigalpa.

  40. Karremans, A.P., Bogarín, D., Díaz-Morales, M., Fernández, M., Oses, L. & Pupulin, F. (2016a) Phylogenetic reassessment of Acianthera (Orchidaceae: Pleurothallidinae). Harvard Papers in Botany 21: 171–187. https://doi.org/10.3100/hpib.v21iss2.2016.n4

  41. Karremans, A.P., Albertazzi, F.J., Bakker, F.T., Bogarín, D., Eurlings, C.M., Pridgeon, A., Pupulin, F. & Gravendeel, B. (2016b) Phylogenetic reassessment of Specklinia and its allied genera in the Pleurothallidinae (Orchidaceae). Phytotaxa 272: 1–36. https://doi.org/10.11646/phytotaxa.272.1.1

  42. Karremans, A.P. (2019) To be, or no to be a Stelis. Lankesteriana 19: 281–343. http://dx.doi.org/10.15517/lank.v19i3.40082

  43. Karremans, A.P., Chinchilla, I.F., Rojas-Alvarado, G., Cedeño-Fonseca, M. Damián, A. & Léotard, G. (2020) A reappraisal of Neotropical Vanilla. With a note on taxonomic inflation and the importance of alpha taxonomy in biological studies. Lankesteriana 20: 395–497.

  44. Knowles, G.B. & Wescott, F. (1838) The Floral Cabinet and Magazine of Exotic Botany II. William Smith, London, 188 pp.

  45. Klotzsch, J.F. (1852) Zwei neue Orchideen. Allgemeine Gartenzeitung 20: 250–251.

  46. La Llave, P. & Lexarna, J.J.M. (1825) Novorum Vegetabilium Descriptiones. Méxici: Apud Martinum Riveram, Mexico, 43 pp.

  47. Linares, J.L. & Ancalmo, P. (2016) Una nueva especie de Sobralia (Orchidaceae) de Honduras. Journal of the Botanical Research Institute of Texas 10: 1–7.

  48. Linden, J.J. (1888) Lycaste virginalis. Lindenia 4: 22, sub. t. 153.

  49. Lindley, J. (1824) Botanical Register X. Ridgways, London, pl. 778–867.

  50. Lindley, J. (1826) Collectanea Botanica VIII. Richard & Arthur Taylor, Shoe-Lane, London, pp. 37–41.

  51. Lindley, J. (1831) Laelia. The Genera and Species of Orchidaceous Plant. Ridgways, London, 554 pp.

  52. Lindley, J. (1836) Botanical Register XXI. Ridgways, London, pl. 1742–1828.

  53. Lindley, J. (1837) Chysis. Edwards’s Botanical Register 23. James Ridgway and Sons, London, 272 pp.

  54. Lindley, J. (1840a) The Genera and Species of Orchidaceous Plants. Ridgways, London, 553 pp.

  55. Lindley, J. (1840b) Edwards’s Botanical Register 26. James Ridgway, London, 384 pp.

  56. Lindley, J. (1843) Lycaste. Edwards’s Botanical Register 29. James Ridgway, London, 283 pp.

  57. Linnaeus, C. (1759) Systema Naturae X. Impensis Direct Laurentii Salvii, Holmiæ, 824 pp.

  58. Linnaeus, C. (1763) Species Plantarum II. Impensis Direct Laurentii Salvii, Holmiæ, 899 pp.

  59. Luer, C.A. (1997) New species of Lepanthes and Pleurothallis (Orchidaceae) from Guatemala, Panama, Peru, Suriname, and Venezuela. Lindleyana 12: 34–55.

  60. Luer, C.A. (2005) Icones Pleurothallidinarum XXVII. Dryadella and Acronia sect. Macrophyllaceae-Fasciculatae. Monographs in Systematic Botany from the Missouri Botanical Garden 103: 1–311.

  61. Meneguzzo, T.E.C. (2012) Mudanças nomenclaturais em Goodyerinae do Novo Mundo (Orchidaceae). Orquidário 26: 86–91.

  62. Molina, R.A. (1975) Enumeración de las plantas de Honduras. Ceiba 19: 1–118.

  63. Morrone, J.J. (2014) Biogeographical regionalisation of the Neotropical region. Zootaxa 3782: 1–110. https://doi.org/10.11646/zootaxa.3782.1.1

  64. Nelson, S.C.H. (1976) Algunas Plantas del Departamento de Ocotepeque, Honduras. Ceiba 20: 27–42.

  65. Nelson, S.C.H. (1978) Contribuciones a la flora de la Mosquitia, Honduras. Ceiba 22: 41–64.

  66. Nelson, S.C.H. (1986) Plantas nuevas para la flora de Honduras IV y propuesta de la combinación Eupatorium bohlmannianum. Ceiba 27: 181–226.

  67. Nelson, S.C.H. (1996) La flora de Honduras en la Biologia Centrali-Americana, de Hemsley. Fontqueria 44: 53–68.

  68. Nelson, S.C.H. (2002) Contribución a la flora de Cayo Cochino Pequeño, Honduras. Ceiba 43: 267–272.

  69. Nelson, S.C.H. (2008) Catálogo de plantas vasculares de Honduras, espermatofitas. Editorial Guaymuras, Tegucigalpa, 1576 pp.

  70. Nelson, S.C.H. (2010) Adiciones y Comentarios a la Flora de Honduras. Ceiba 51: 70–88. [https://revistas.zamorano.edu/index.php/CEIBA/article/view/506/485]

  71. Nelson, S.C.H. & Guerrero, E.Y. (2009) Redescubrimiento del holotipo de Epidendrum × doroteae P.H. Allen (Orchidaceae). Ceiba 50: 47–49

  72. Nelson, S.C.H. & Ortiz-Kafati, J.C. (2007) La Colección de Orquídeas del Herbario TEFH de Honduras. Ceiba 48: 11–59. [https://revistas.zamorano.edu/index.php/CEIBA/article/view/342/334]

  73. Oakeley, H.F. (1993) Lycaste × michelii. Orchid Review 101: 108–112.

  74. Oakeley, H.F. (2008) Lycaste, Ida and Anguloa: The Essential Guide. Dr Henry Oakeley, Kent, 454 pp.

  75. Ossenbach, C. (2009) Orchids and orchidology in Central America. 500 years of history. Lankesteriana 9: 1–268. https://doi.org/10.15517/lank.v0i0.12019

  76. Ossenbach, C., Pupulin, F. & Dressler, R.L. (2007) Orquídeas del Istmo Centroamericano. Catálogo y estado de conservación. Editorial 25 de Mayo, Montes Oca, 243 pp.

  77. Parrales-Hernández, F.M. (2015) Diversidad y distribución altitudinal de orquídeas terrestres del cerro Uyuca. B.S. Thesis. Escuela Agrícola Panamericana, Zamorano, Francisco Morazán.

  78. Pérez-Munguía, D.E. (2015a) Orquídeas Nativas de Honduras, Vol. I. Editorial Ramsés, Tegucigalpa, Francisco Morazán, 219 pp.

  79. Pérez-Munguía, D.E. (2015b) Orquídeas Nativas de Honduras, Vol. II. Editorial Ramsés, Tegucigalpa, Francisco Morazán, 167 pp.

  80. Pérez-Munguía, D.E. (2017) Cuatro nuevos registros de Orchidaceae para Honduras. Lankesteriana 17: 411–415. http://dx.doi.org/10.15517/lank.v17i3.31647

  81. Pérez-Munguía, D.E. (2020) Lyroglossa pubicaulis y Acianthera angustisepala: Nuevos registros de Orchidaceae para Honduras. Ceiba 0845: 1–2. https://doi.org/10.5377/ceiba.v0i0845.9863

  82. Portillo-Reyes, H.O., Elvir, F., Manzanares, T. & Martínez, M. (2018) La Guara Verde (Ara ambiguus) en Honduras: notas sobre su distribución, hábitat y amenazas. Huitzil, Revista Mexicana de Ornitología 19: 120–130. https://doi.org/10.28947/hrmo.2018.19.1.317

  83. Pridgeon, A.M. & Chase, M.W. (2001) A phylogenetic reclassification of Pleurothallidinae (Orchidaceae). Lindleyana 16: 235-271.

  84. Reichenbach, H.G. (1852) Neue Orchideen der Expedition des Herrn J. von Warszewicz. Botanische Zeitung (Berlin) 10: 729–735.

  85. Reichenbach, H.G. (1855) Bonplandia. Zeitschrift für die gesammte Botanik 3. Carl Rümpler, Hannover, 346 pp.

  86. Reichenbach, H.G. (1881) New garden plants. The Gardeners’ Chronicle, new series 16: 134.

  87. Reichenbach, H.G. & Warszewicz, J.R. (1857) Chysis bruennowiana. Botanische Zeitung 15: 157.

  88. Richard, A. & Galeotti, H.G. (1845) Orchidographie Mexicaine. Annales des Sciences Naturelles Botanique 3: 15–33.

  89. Rivera-Dueñas, R.A. (2002) Guía ilustrada de 55 especies de Orquídeas encontradas en la Reserva Biológica de Yuscarán, Honduras. B.S. Thesis. Escuela Agrícola Panamericana, Zamorano, Francisco Morazán.

  90. Rojas-Alvarado, G. & Karremans, A.P. (2020) Revision of the Costa Rican species of Myoxanthus (Pleurothallidinae: Orchidaceae). Phytotaxa 448: 1–70. https://doi.org/10.11646/phytotaxa.448.1.1

  91. Secretaria de Recursos Naturales y Ambiente (SERNA) (2008) Especies de Preocupación Especial en Honduras Tegucigalpa, Honduras. Secretaria de Recursos Naturales y Ambiente (SERNA), Dirección General de Biodiversidad (DiBio), Tegucigalpa, 77 pp.

  92. Scheidweiler, M.J.F. (1842) Maxillaria virginalis. Bulletin de l’Academie Royale des Sciences et Belles-lettres de Bruxelles 9: 25.

  93. Schlechter, F.R.R. (1911) Die Polychondreae (Neottinae Pfitz.) und ihre systematische Einteilung. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 45: 375–410.

  94. Schlechter, F.R.R. (1918) Kritische Aufzählung der bisher aus Zentral-Amerika bekanntgewordenen Orchidaceen. Beihefte zum Botanischen Centralblatt 36: 321–520.

  95. Schlechter, F.R.R. (1922) Beitrage zur Orchideenkunde von Zentralamerika. I. Orchidaceae Powellianae Panamenses. Repertorium Specierum Novarum Regni Vegetabilis, Beihefte 17: 1–95.

  96. Shaw, J.M.H. (2014) Pleurothallis hawkinsii. Orchid Review 122: 77.

  97. Siegerist, E.S. (1984) Herbarium specimens of the Orchidaceae of Central America - a checklist. Selbyana 7: 281–311.

  98. Soto Arenas, M.A., & E. Hágsater (2018) Epidendrum hondurense. In: Hágsater, E. & Santiago, E. (Eds.) The Genus Epidendrum, Part 12. Icones Orchidacearum 16: pl. 1625.

  99. Standley, P.C. (1931) Flora of the Lancetilla Valley, Honduras. Field Museum of Natural History. Botanical series 10: 1–418.

  100. Standley, P.C. & Williams, L.O. (1952) Plantae Centrali-Americanae, III. Ceiba 3: 35–68.

  101. Swartz, O. (1788) Nova Genera et Species Plantarum seu Prodromus. Upsaliæ & Aboæ, Holmiae, 158 pp.

  102. Swartz, O. (1799a) Dianome Epidendri Generis. Linn. Nova Acta Regiae Societatis Scientiarum Upsaliensis 2: 61–88.

  103. Swartz, O. (1799b) Dianome Epidendri Generis. Linn. Journal für die Botanik 2: 201–244.

  104. Thiers, B. (2016) [continuously updated] Index Herbariorum: A Global Directory of Public Herbaria and Associated Staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/ih/ (accessed 20 June 2020)

  105. Van Imschoot & Cogniaux, C.A. (1883) Orchid Album: comprising coloured figures and descriptions of new, rare, and beautiful orchidaceous plants II. B. S. Williams, London, pl. 49–96.

  106. Vega, H., Cetzal-Ix, W., Mó, E., Germer, D. & Soler, K. (2014) Nuevos Registros de Orchideaceae para Honduras. Lankesteriana 14: 115–121. https://doi.org/10.15517/LANK.V14I2.15590

  107. Vega, H., Cetzal-Ix, W., Mó, E. & Martínez, J.A. (2020) Orquídeas del Parque Nacional Montaña de Celaque, Lempira, Honduras. MAPANCE-ProCelaque & UICN.

  108. Vega, H., Cetzal-Ix, W., Mó, E. & Romero-Soler, K. (2016) Nuevos registros para la flora de Honduras y El Parque Nacional Montaña de Celaque. Acta biológica colombiana 21: 635–644. https://doi.org/10.15446/abc.v21n3.51020

  109. Villaseñor, J.L., Maeda, P., Colín-López, J.J. & Ortíz, E. (2005) Estimación de la riqueza de especies de Asteraceae mediante extrapolación a partir de datos de presencia-ausencia. Boletín de la Sociedad Botánica de México 76: 5–18.

  110. Wiese, K. (2015) Riqueza de la familia Orchidaceae en la zona de visitantes del Parque Nacional Cerro Azul Meámbar de Honduras. Lankesteriana 15: 203–210. http://dx.doi.org/10.15517/lank.v15i3.21667

  111. Willdenow, C.L. (1805) Species Plantarum IV. Impensis G.C. Nauk, Berolini, 629 pp.

  112. Williams, L.O. (1940) Orchid studies, XI. Botanical Museum Leaflets, Harvard University 8: 106–108.

  113. Williams, L.O. (1946) New and interesting Mexican orchids. Botanical Museum Leaflets, Harvard University 12: 225–254.

  114. Williams, L.O. (1956) An enumeration of the Orchidaceae of Central America, British Honduras, and Panama. Ceiba 5: 1–256.

  115. Withner, C.L. (1970) The bulb epidendrums of Mexico and Central America VI, some problem species, E. mooreanum and E. ramonense, and a new species, E. dickinsonianum Withner. Orchid Digest 34: 251–254.

  116. Yuncker, T.G. (1938) A contribution to the Flora of Honduras. Field Museum of Natural History. Botanical series 17: 287–407.

  117. Yuncker, T.G. (1940) Flora of the Aguan Valley and the coastal regions near La Ceiba, Honduras. Field Museum of Natural History. Botanical series 9: 243–346.

  118.