Abstract
Natural hybridization has often been recorded within certain genera of orchids, one of them is Catasetum. During a field study in a forest de igapó in Brazilian Amazon, a new natural hybrid was found, it is here described as Catasetum × sheyllae. Its morphological features, mainly the structures of the lip, are intermediate between those of its putative parent species, C. boyi and C. garnettianum, both observed in sympatry.
References
<p>Azevedo, C.O., Borba, E.L. & van den Berg, C. (2006) Evidence of natural hybridization and introgression in <em>Bulbophyllum involutum </em>Borba, Semir & F. Barros and <em>B. weddellii </em>(Lindl.) Rchb.f. (Orchidaceae) in the Chapada Diamantina, Brazil, by using allozyme markers. <em>Revista Brasileira de Botânica </em>29: 415–421. https://doi.org/10.1590/S0100-84042006000300008</p>
<p>Borba, E.L. & Semir, J. (1998) <em>Bulbophyllum ×cipoense</em> (Orchidaceae), a new natural hybrid from the Brazilian “campos rupestres”: description and biology. <em>Lindleyan</em>a 13: 113–120.</p>
<p>Cetzal-Ix, W., Carnevali, G., Noguera-Savelli, E., Mó, E., Cash-Arcia, N. & Basu, S.K. (2018) Natural Hybridization in <em>Lophiaris </em>(Orchidaceae: Oncidiinae). <em>Systematic Bpotany </em>43: 930–949. https://doi.org/10.1600/036364418X697599</p>
<p>Coyne, J.A. & Orr, H.A. (2004) <em>Speciation</em>. Sinauer Associates, Sunderland, 545 pp.</p>
<p>Govaerts, R., Dransfield, J., Zona, S., Hodel, D.R. & Henderson, A. (2021) <em>World Checklist of Orchidaceae</em>. Facilitated by the Royal Botanic Gardens, Kew. Available from: http://apps.kew.org/wcsp/ (Accessed 6 July 2021)</p>
<p>Harris, J. & Harris, M. (2001) <em>Plant identification terminology – an illustrated glossary</em>. Spring Lake Publishing, Payson, Utah.</p>
<p>Holst, A.W. (1999) <em>The world of Catasetums</em>. Timber Press, Portland, 560 pp.</p>
<p>Hu, S.J., Hu, H., Yan, N., Huang, J.L. & Li, S.Y. (2011) Hybridization and asymmetric introgression between <em>Cypripedium tibeticum</em> and <em>C. yunnanense</em> in Shangrila County, Yunnan Province, China. <em>Nordic Journal of Botany</em> 29: 625–631. https://doi.org/10.1111/j.1756-1051.2010.00918.x</p>
<p>Köppen, W. (1948) <em>Climatologia: con un estudio de los climas de la tierra</em>. Fondo de Cultura Económica, México, 479 pp.</p>
<p>Krahl, A.H., Krahl, D.R.P. & Pansarin, E. (2021a) <em>Ionopsis </em>×<em> atalibae</em> (Orchidaceae, Oncidiinae), a new natural hybrid from the Brazilian Amazon. <em>Phytotaxa</em> 478 (2): 268–274. https://doi.org/10.11646/phytotaxa.478.2.8</p>
<p>Krahl, A.H., Krahl, D.R.P., Cantuária, P.C. & Silva, J.B.F. (2021b) <em>Catasetum saracataquerense</em> (Orchidaceae, Catasetinae), a new species of Brazilian Amazon. <em>Richardiana, nouvelle série </em>5: 206–216.</p>
<p>Krahl, D.R.P., Krahl, A.H.& Chiron, G. (2020) <em>Catasetum </em>× <em>louisiae </em>(Orchidaceae, Catasetinae), a new natural hybrid for the Brazilian Amazon. <em>Richardiana, nouvelle série </em>4: 214–223.</p>
<p>Levin, D.A. (2000) The origin, expansion and demise of plant species. Oxford University Press, New York, 230 pp.</p>
<p>Lindley, J. (1843) Catasetinae. <em>Edward’s Botanical Register </em>29: sub. t. 22.</p>
<p>Luizão, F.J. (1995) <em>Ecological studies in contrasting forest types in Central Amazonia</em>. PhD Thesis, University of Stirling, 288 pp.</p>
<p>Mansfeld, R. (1930) <em>Catasetum boyi</em>. <em>Repertorium Specierum Novarum Regni Vegetabilis </em>28: 94. https://doi.org/10.1002/fedr.4870280603</p>
<p>Marques, I., Draper, D., Riofrío, L. & Naranjo, C. (2014) Multiple hybridization events, polyploidy and low postmating isolation entangle the evolution of neotropical species of <em>Epidendrum</em> (Orchidaceae). <em>BMC Evolutionary Biology</em> 14: 1–14. https://doi.org/10.1186/1471-2148-14-20</p>
<p>Mori, S.A., Silva, L.A., Lisboa, G. & Coradin, L. (1989) <em>Manual de Manejo do Herbário Fanerogâmico</em>. Ceplac, Ilhéus, 104 pp.</p>
<p>Pansarin, E.R. & Amaral, M.C.E. (2008) Reproductive biology and pollination mechanisms of <em>Epidendrum secundum</em> (Orchidaceae). Floral variation: a consequence of natural hybridization? <em>Plant Biology</em> 10: 211–219. https://doi.org/10.1111/j.1438-8677.2007.00025.x</p>
<p>Petini-Benelli, A. (2020) <em>Catasetum</em>. Flora do Brasil 2020 by Jardim Botânico do Rio de Janeiro, JBRJ. Avaiable from: http://floradobrasil.jbrj.gov.br/reflora/floradobrasil/FB11312 (Accessed 6 July 2021).</p>
<p>Pinheiro, F., Barros, F., Palma-Silva, C., Meyer, D., Fay, M.F., Suzuki, R.M., Lexer, C. & Cozzolino, S. (2010) Hybridization and introgression across different ploidy levels in the Neotropical orchids <em>Epidendrum</em> <em>fulgens</em> and <em>E. puniceoluteum</em> (Orchidaceae). <em>Molecular Ecology</em> 19: 3981–3994. https://doi.org/10.1111/j.1365-294X.2010.04780.x</p>
<p>Richard, L.C.M. (1822) <em>Catasetum</em>. <em>Synopsis Plantarum</em> 1: 330–331.</p>
<p>Rolfe, R.A. (1888) <em>Catasetum garnettianum</em>. <em>The Gardeners Chronicle & Agricultural Gazette </em>2: 692.</p>
<p>Romero, G.A. & Carnevali, G. (2009) <em>Catasetum</em>.<em> In: </em>Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (eds.) <em>Genera Orchidearum, Epidendroidea – Part II</em>. New York, Oxford University Press, pp. 13–18.</p>
<p>Romero, G.A. & Jenny, R (1993) Contributions toward a monograph of <em>Catasetum </em>(Catasetinae, Orchidaceae) I: A checklist of species, varieties, and natural hybrids. <em>Harvard Papers in Botany</em> 1: 59–84.</p>
<p>Silva, J.B.F. & Silva, M.F.F. (1998) <em>Orquídeas Nativas da Amazônia Brasileira: gênero Catasetum L. C. Rich. ex Kunth</em>. Museu Paraense Emílio Goeldi, Belém, 518 pp.</p>
<p>Thiers, B.M. (ed.) (2021) [continuously updated] <em>Index Herbariorum</em>: A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Avaiable from: http://sweetgum.nybg.org/ih/ (Accessed 6 July 2021).</p>
<p>van der Pijl, L. & Dodson, C.H. (1966) <em>Orchid flowers: their pollination and evolution</em>. University of Miami Press, Florida, 214 pp.</p>
<p>Vieira, B.C., Pansarin, L.M., Martucci, M.E.P., Gobbo-Neto, L. & Pansarin, E.R. (2017) Pollinarium size as a hybridization barrier between sympatric inter-compatible orchids. <em>Australian Journal of Botany</em> 65: 497–506. https://doi.org/10.1071/BT17081</p>
<p>Walker-Larsen, J. & Harder, L.D. (2000) The evolution of staminodes in Angiosperms: patterns of stamen reduction, loss, and functional re-invention. <em>American Journal of Botany </em>87: 1367–1384. https://doi.org/10.2307/2656866</p>
<p> </p>
<p>Borba, E.L. & Semir, J. (1998) <em>Bulbophyllum ×cipoense</em> (Orchidaceae), a new natural hybrid from the Brazilian “campos rupestres”: description and biology. <em>Lindleyan</em>a 13: 113–120.</p>
<p>Cetzal-Ix, W., Carnevali, G., Noguera-Savelli, E., Mó, E., Cash-Arcia, N. & Basu, S.K. (2018) Natural Hybridization in <em>Lophiaris </em>(Orchidaceae: Oncidiinae). <em>Systematic Bpotany </em>43: 930–949. https://doi.org/10.1600/036364418X697599</p>
<p>Coyne, J.A. & Orr, H.A. (2004) <em>Speciation</em>. Sinauer Associates, Sunderland, 545 pp.</p>
<p>Govaerts, R., Dransfield, J., Zona, S., Hodel, D.R. & Henderson, A. (2021) <em>World Checklist of Orchidaceae</em>. Facilitated by the Royal Botanic Gardens, Kew. Available from: http://apps.kew.org/wcsp/ (Accessed 6 July 2021)</p>
<p>Harris, J. & Harris, M. (2001) <em>Plant identification terminology – an illustrated glossary</em>. Spring Lake Publishing, Payson, Utah.</p>
<p>Holst, A.W. (1999) <em>The world of Catasetums</em>. Timber Press, Portland, 560 pp.</p>
<p>Hu, S.J., Hu, H., Yan, N., Huang, J.L. & Li, S.Y. (2011) Hybridization and asymmetric introgression between <em>Cypripedium tibeticum</em> and <em>C. yunnanense</em> in Shangrila County, Yunnan Province, China. <em>Nordic Journal of Botany</em> 29: 625–631. https://doi.org/10.1111/j.1756-1051.2010.00918.x</p>
<p>Köppen, W. (1948) <em>Climatologia: con un estudio de los climas de la tierra</em>. Fondo de Cultura Económica, México, 479 pp.</p>
<p>Krahl, A.H., Krahl, D.R.P. & Pansarin, E. (2021a) <em>Ionopsis </em>×<em> atalibae</em> (Orchidaceae, Oncidiinae), a new natural hybrid from the Brazilian Amazon. <em>Phytotaxa</em> 478 (2): 268–274. https://doi.org/10.11646/phytotaxa.478.2.8</p>
<p>Krahl, A.H., Krahl, D.R.P., Cantuária, P.C. & Silva, J.B.F. (2021b) <em>Catasetum saracataquerense</em> (Orchidaceae, Catasetinae), a new species of Brazilian Amazon. <em>Richardiana, nouvelle série </em>5: 206–216.</p>
<p>Krahl, D.R.P., Krahl, A.H.& Chiron, G. (2020) <em>Catasetum </em>× <em>louisiae </em>(Orchidaceae, Catasetinae), a new natural hybrid for the Brazilian Amazon. <em>Richardiana, nouvelle série </em>4: 214–223.</p>
<p>Levin, D.A. (2000) The origin, expansion and demise of plant species. Oxford University Press, New York, 230 pp.</p>
<p>Lindley, J. (1843) Catasetinae. <em>Edward’s Botanical Register </em>29: sub. t. 22.</p>
<p>Luizão, F.J. (1995) <em>Ecological studies in contrasting forest types in Central Amazonia</em>. PhD Thesis, University of Stirling, 288 pp.</p>
<p>Mansfeld, R. (1930) <em>Catasetum boyi</em>. <em>Repertorium Specierum Novarum Regni Vegetabilis </em>28: 94. https://doi.org/10.1002/fedr.4870280603</p>
<p>Marques, I., Draper, D., Riofrío, L. & Naranjo, C. (2014) Multiple hybridization events, polyploidy and low postmating isolation entangle the evolution of neotropical species of <em>Epidendrum</em> (Orchidaceae). <em>BMC Evolutionary Biology</em> 14: 1–14. https://doi.org/10.1186/1471-2148-14-20</p>
<p>Mori, S.A., Silva, L.A., Lisboa, G. & Coradin, L. (1989) <em>Manual de Manejo do Herbário Fanerogâmico</em>. Ceplac, Ilhéus, 104 pp.</p>
<p>Pansarin, E.R. & Amaral, M.C.E. (2008) Reproductive biology and pollination mechanisms of <em>Epidendrum secundum</em> (Orchidaceae). Floral variation: a consequence of natural hybridization? <em>Plant Biology</em> 10: 211–219. https://doi.org/10.1111/j.1438-8677.2007.00025.x</p>
<p>Petini-Benelli, A. (2020) <em>Catasetum</em>. Flora do Brasil 2020 by Jardim Botânico do Rio de Janeiro, JBRJ. Avaiable from: http://floradobrasil.jbrj.gov.br/reflora/floradobrasil/FB11312 (Accessed 6 July 2021).</p>
<p>Pinheiro, F., Barros, F., Palma-Silva, C., Meyer, D., Fay, M.F., Suzuki, R.M., Lexer, C. & Cozzolino, S. (2010) Hybridization and introgression across different ploidy levels in the Neotropical orchids <em>Epidendrum</em> <em>fulgens</em> and <em>E. puniceoluteum</em> (Orchidaceae). <em>Molecular Ecology</em> 19: 3981–3994. https://doi.org/10.1111/j.1365-294X.2010.04780.x</p>
<p>Richard, L.C.M. (1822) <em>Catasetum</em>. <em>Synopsis Plantarum</em> 1: 330–331.</p>
<p>Rolfe, R.A. (1888) <em>Catasetum garnettianum</em>. <em>The Gardeners Chronicle & Agricultural Gazette </em>2: 692.</p>
<p>Romero, G.A. & Carnevali, G. (2009) <em>Catasetum</em>.<em> In: </em>Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (eds.) <em>Genera Orchidearum, Epidendroidea – Part II</em>. New York, Oxford University Press, pp. 13–18.</p>
<p>Romero, G.A. & Jenny, R (1993) Contributions toward a monograph of <em>Catasetum </em>(Catasetinae, Orchidaceae) I: A checklist of species, varieties, and natural hybrids. <em>Harvard Papers in Botany</em> 1: 59–84.</p>
<p>Silva, J.B.F. & Silva, M.F.F. (1998) <em>Orquídeas Nativas da Amazônia Brasileira: gênero Catasetum L. C. Rich. ex Kunth</em>. Museu Paraense Emílio Goeldi, Belém, 518 pp.</p>
<p>Thiers, B.M. (ed.) (2021) [continuously updated] <em>Index Herbariorum</em>: A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Avaiable from: http://sweetgum.nybg.org/ih/ (Accessed 6 July 2021).</p>
<p>van der Pijl, L. & Dodson, C.H. (1966) <em>Orchid flowers: their pollination and evolution</em>. University of Miami Press, Florida, 214 pp.</p>
<p>Vieira, B.C., Pansarin, L.M., Martucci, M.E.P., Gobbo-Neto, L. & Pansarin, E.R. (2017) Pollinarium size as a hybridization barrier between sympatric inter-compatible orchids. <em>Australian Journal of Botany</em> 65: 497–506. https://doi.org/10.1071/BT17081</p>
<p>Walker-Larsen, J. & Harder, L.D. (2000) The evolution of staminodes in Angiosperms: patterns of stamen reduction, loss, and functional re-invention. <em>American Journal of Botany </em>87: 1367–1384. https://doi.org/10.2307/2656866</p>
<p> </p>