Abstract
Barkeria uruapani, a new orchid species endemic to Michoacán, Mexico, is described and illustrated. Information on its distribution, habitat and conservation status is provided. The new species is also compared with B. barkeriola and B. uniflora, and an updated key to all Barkeria species is included. Diagnostic features of B. uruapani include the branching inflorescences with simultaneous anthesis, the elliptical-obovate lip with a large magenta spot, the revolute wings of the column and the lateral sepals forming an obtuse angle.
References
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<p>Loefling, P. (1758) <em>Iter hispanicum. </em>Stockholm, Lars Salvius. 272 pp.</p>
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<p>Rafinesque, C.S. (1837) <em>Flora Telluriana</em> 2. H. Probasco, Philadelphia, 112 pp.</p>
<p>Reichenbach, H.G. (1877) Orchideae Roezlianae novae seu criticae. <em>Linnaea </em>41: 1–98.</p>
<p>Reichenbach, H.G. (1884) New Garden Plants. <em>The Gardeners’ Chronicle, New Series</em> 22: 616–617.</p>
<p>Reichenbach, H.G. (1885) New Garden Plants. <em>The Gardeners’ Chronicle, New Series</em> 24: 678.</p>
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<p>Rolfe, R.A. (1893) New orchids: Decade 4. <em>Bulletin Miscellaneous Information</em> 1893: 6–7. https://doi.org/10.2307/4118281</p>
<p>Schweinfurth, C. (1948) <em>Epidendrum whartonianum</em>. <em>American Orchid Society Bulletin </em>17: 678316–318.</p>
<p>Schlechter, R. (1918) Kritische Aufzählung der bisher aus Zentral-Amerika bekanntgewordenen Orchidaceen. <em>Beihefte zum Botanische Centralblatt. Zweite Abteilung, Systematik, Pflanzengeographie, angewandte Botanik </em>36: 470.</p>
<p>Schlechter, F.R.R. (1923) Beiträge zur Orchideenkunde von Zentralamerika, II. Additamenta ad Orchideologiam Costaricensem, I. Orchidaceae Amparoanae. <em>Repertorium Specierum Novovarum Regni Vegetabilis Beihefte</em> 19: 3–75.</p>
<p>Segovia-Rivas, A., Meave, J.A., González, E.J. & Pérez-García, E.A. (2018) Experimental reintroduction and host preference of the microendemic and endangered orchid <em>Barkeria whartoniana</em> in a Mexican Tropical Dry Forest. <em>Journal for Nature Conservation</em> 43: 156–164. https://doi.org/10.1016/j.jnc.2018.04.004</p>
<p>Soto-Arenas, M.A. (1993a) <em>Barkeria melanocaulon </em>y <em>Barkeria</em> <em>whartoniana</em>. <em>Orquídea </em>(Méx.) 13: 233–244.</p>
<p>Soto-Arenas, M.A. (1993b) <em>Barkeria fritz-halbingeriana</em>. <em>Orquídea </em>(Méx.) 13: 245–248.</p>
<p>Soto-Arenas, M.A. (2008) <em>Barkeria</em> <em>uniflora</em> (La Llave & Lex.) Dressler & Halb. <em>Icones Orchidacearum </em>10. Herbario AMO, México D.F. plate 1008.</p>
<p>Thien, L.B. & Dressler, R.L. (1970) Taxonomy of <em>Barkeria</em> (Orchidaceae). <em>Brittonia</em> 22: 289–302. http://dx.doi.org/10.2307/2805677</p>
<p>Valverde-Rojas, I. (2006) Crecimiento de <em>Barkeria lindleyana</em> (Orchidaceae) en un hábitat suburbano de Costa Rica.<em> Lankesteriana </em>6: 33–41. http://dx.doi.org/10.15517/lank.v6i2.19678</p>
<p>Williams, L.O. (1951) The Orchidaceae of Mexico. <em>Ceiba</em> 2: 1–321.</p>
<p>Angulo, D.F., Ruiz-Sánchez, E. & Sosa, V. (2012) Niche conservatism in the Mesoamerican seasonal tropical dry forest orchid <em>Barkeria</em> (Orchidaceae). <em>Evolutionary Ecology </em>26: 991–1010. https://doi.org/10.1007/s10682-011-9528-0</p>
<p>Archila, F. & Chiron, G.R. (2011) Explorations botaniques au Guatemala. 2<sup>a</sup>. <em>Richardiana </em>11: 179–206.</p>
<p>Aublet, J.B.C.F. (1775) <em>Histoire des plantes de la Guiane Françoise, rangées suivant la méthode sexuelle, avec plusieurs mémoires: sur différens objets intéressans, relatifs à la Culture et au Commerce de la Guiane Françoise & une Notice des Plantes de l’Isle-de-France. Ouvrage orné de près de quatre cents planches en taille-douce, où sont représentées des plantes qui n’ont point encore été decrites ni gravées, ou qui ne l’ont été qu’imparfaitement</em>. Vol. 1. Chez Pierre-Francois Didot jeune, Libraire de la Faculté de Médecine, Quai des Augustins, Londres & Paris, 621 pp. https://doi.org/10.5962/bhl.title.48831</p>
<p>Christenson, E.A. (1988) Nomenclatural changes in Neotropical Orchidaceae. <em>Lindleyana</em> 3: 221–223.</p>
<p>Grisebach, A.H.R. (1860) <em>Flora of the British West Indian Islands</em>. Lovel Reeve & Co., London.</p>
<p>Halbinger, F. (1975) <em>Barkeria</em> <em>shoemakeri</em>, una nueva orquídea del estado de Michoacán. <em>Orquídea </em>(Méx.) 4: 291–297.</p>
<p>Halbinger, F. (1976) <em>Barkeria dorotheae</em>, sp. nov; una nueva adición a la orquideoflora mexicana. <em>Orquídea </em>(Méx.) 6: 39–46.</p>
<p>Halbinger, F. (1977a) Notas sobre la nomenclatura de <em>Barkeria</em>: <em>Barkeria</em> <em>scandens</em>, <em>B. uniflora</em> y <em>B. strophinx</em>. <em>Orquídea </em>(Méx.) 6: 245–254.</p>
<p>Halbinger, F. (1977b) Síntesis gráfica del género <em>Barkeria</em>. <em>Orquídea </em>(Méx.) 6: 336–345.</p>
<p>Jacquin, N.J. (1801) <em>Fragmenta Botanica</em>. Mathiae Andreae Schmidt, Vienna, 86 pp. + 138 T.</p>
<p>La Llave, P. & Lexarza, J.J.M. (1825) Orchidianum Opusculum. <em>Novorum Vegetabilium Descriptiones</em>. Fasciculus II, 43 pp.</p>
<p>Lindley, J. (1836) <em>Epidendrum skinneri</em>. <em>Edwards’s Botanical Register</em> 22: tab. 1881.</p>
<p>Lindley, J. (1842) Miscellaneous notices. <em>Edwards’s Botanical Register</em> 28: 1–86.</p>
<p>Lindley, J. (1846) New Garden Plants. <em>The Gardeners’ Chronicle & Agricultural Gazette </em>1846: 167.</p>
<p>Linnaeus, C. (1753) <em>Species plantarum</em> vol. 1. Salvius, Stockholm, 560 pp.</p>
<p>Linnaeus, C. (1763) Gynandria Diandra. Classis XX. <em>Species Plantarum</em>, <em>Ed. 2</em>. Impensis direct, Laurentii Salvii, Stockholm, pp. 1347–1353.</p>
<p>Loefling, P. (1758) <em>Iter hispanicum. </em>Stockholm, Lars Salvius. 272 pp.</p>
<p>Knowles, G.B. & Westcott, F. (1838) Botanical notices of new plants. <em>The Floral Cabinet</em> 2: 7–8.</p>
<p>QGIS, Development Team (2020) QGIS Geographic Information System. Open Source Geospatial Foundation Project. Available from: http://qgis.osgeo.org (accessed January 2021)</p>
<p>Paxton, J. (1849) <em>Barkeria skinneri</em> var. <em>major</em>. <em>Paxton’s Magazine of Botany </em>15: 1–2. tab. 1.</p>
<p>Presl, C.B. (1827) Orchideae. <em>Reliquiae Haenkeanae</em> 1: 91–104.</p>
<p>Rafinesque, C.S. (1837) <em>Flora Telluriana</em> 2. H. Probasco, Philadelphia, 112 pp.</p>
<p>Reichenbach, H.G. (1877) Orchideae Roezlianae novae seu criticae. <em>Linnaea </em>41: 1–98.</p>
<p>Reichenbach, H.G. (1884) New Garden Plants. <em>The Gardeners’ Chronicle, New Series</em> 22: 616–617.</p>
<p>Reichenbach, H.G. (1885) New Garden Plants. <em>The Gardeners’ Chronicle, New Series</em> 24: 678.</p>
<p>Richard, A. & Galeotti, G.G. (1845) Orchidographie mexicaine. <em>Annales des Sciences Naturelles; Botanique</em>, sér. 3, 3: 15–33.</p>
<p>Rolfe, R.A. (1893) New orchids: Decade 4. <em>Bulletin Miscellaneous Information</em> 1893: 6–7. https://doi.org/10.2307/4118281</p>
<p>Schweinfurth, C. (1948) <em>Epidendrum whartonianum</em>. <em>American Orchid Society Bulletin </em>17: 678316–318.</p>
<p>Schlechter, R. (1918) Kritische Aufzählung der bisher aus Zentral-Amerika bekanntgewordenen Orchidaceen. <em>Beihefte zum Botanische Centralblatt. Zweite Abteilung, Systematik, Pflanzengeographie, angewandte Botanik </em>36: 470.</p>
<p>Schlechter, F.R.R. (1923) Beiträge zur Orchideenkunde von Zentralamerika, II. Additamenta ad Orchideologiam Costaricensem, I. Orchidaceae Amparoanae. <em>Repertorium Specierum Novovarum Regni Vegetabilis Beihefte</em> 19: 3–75.</p>
<p>Segovia-Rivas, A., Meave, J.A., González, E.J. & Pérez-García, E.A. (2018) Experimental reintroduction and host preference of the microendemic and endangered orchid <em>Barkeria whartoniana</em> in a Mexican Tropical Dry Forest. <em>Journal for Nature Conservation</em> 43: 156–164. https://doi.org/10.1016/j.jnc.2018.04.004</p>
<p>Soto-Arenas, M.A. (1993a) <em>Barkeria melanocaulon </em>y <em>Barkeria</em> <em>whartoniana</em>. <em>Orquídea </em>(Méx.) 13: 233–244.</p>
<p>Soto-Arenas, M.A. (1993b) <em>Barkeria fritz-halbingeriana</em>. <em>Orquídea </em>(Méx.) 13: 245–248.</p>
<p>Soto-Arenas, M.A. (2008) <em>Barkeria</em> <em>uniflora</em> (La Llave & Lex.) Dressler & Halb. <em>Icones Orchidacearum </em>10. Herbario AMO, México D.F. plate 1008.</p>
<p>Thien, L.B. & Dressler, R.L. (1970) Taxonomy of <em>Barkeria</em> (Orchidaceae). <em>Brittonia</em> 22: 289–302. http://dx.doi.org/10.2307/2805677</p>
<p>Valverde-Rojas, I. (2006) Crecimiento de <em>Barkeria lindleyana</em> (Orchidaceae) en un hábitat suburbano de Costa Rica.<em> Lankesteriana </em>6: 33–41. http://dx.doi.org/10.15517/lank.v6i2.19678</p>
<p>Williams, L.O. (1951) The Orchidaceae of Mexico. <em>Ceiba</em> 2: 1–321.</p>