Abstract
Epidendrum claustralis, a new species of the Rupestre Group is described and illustrated. It is a novelty from the Departments of Junín, San Martín and Amazonas, Peru. It is compared to the most similar species, Epidendrum excelsum. The species is characterized by the entire lip and with two prominent parallel calli that lean towards each other after pollination or the loss of the pollinarium, closing the entrance of the nectary, and thus avoiding another pollination event.
References
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E. & Santiago, E. (in press) <em>Epidendrum rupestre.</em> <em>In</em>: Hágsater, E. & Santiago, E. (eds.) The Genus <em>Epidendrum,</em> Part 16, <em>Icones Orchidacearum.</em></span></span></span></p>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Ames, O., Hubbard, F.T. & Schweinfurth, C. (1936) <em>The Genus Epidendrum in the United States and Middle America.</em> Botanical Museum, Cambridge, 233 pp.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Collantes, B. (2014) <em>Huancavelica: Amaru, paraíso de orquídeas</em>. Gobierno Regional de Huancavelica, Lima, 338 pp.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Collantes, B. & Hágsater, E. (2015) <em>Epidendrum ochoae.</em> <em>In:</em> Hágsater, E. & Sánchez S., L. (Eds.) <em>The Genus Epidendrum, </em>Part 11<em>, Icones Orchidacearum</em> 15: pl. 1546.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Decaisne, J. & Planchón, J.E. (1854) Esquisse d‘une monographe des Araliacées.<em> Revue Horticole, Journal d’horticuluture pratique </em>4: 104–109<em>. </em></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Gentry, A. (1993) Overview of the Peruvian Flora. <em>In</em>: Brako, L. & Zarucchi, J. (Eds.) <em>Catalogue of the Flowering plants and Gymnosperms of Peru.</em> <em>Monographs in Systematic Botany from the Missouri Botanical Garden</em> 45: 29–40. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">GFW (2022) <em>Global Forest World,</em> Washington, USA. Available from: https://www.globalforestwatch.org/ (accessed 1 Sept 2022). </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Goicochea, R.A., Gutiérrez, R.A.D., Ruiz, A.R. & Salas, M.G. (2019) <em>Orquídeas del Perú: Relación de especies y sus sinónimos</em>. Corporación G y G E.I.R.L, Moyobamba, 285 pp.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E. (2004) <em>Epidendrum pachydiscum</em>. <em>In:</em> Hágsater, E. & Sánchez, L. (Eds.) <em>The Genus Epidendrum, </em>Part. 4<em>, Icones Orchidacearum</em> 7: pl. 773.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E. & Soto, M.A. (2005a) <em>Epidendrum</em>. <em>In:</em> Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (Eds.) <em>Genera Orchidacearum</em> 4. <em>Epidendroideae,</em> Part. 1. Oxford University Press, Oxford, pp. 236–251.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E. (2005b) <em>Epidendrum pachydiscum.</em> <em>In</em>: Hagsater, E. & Salazar, G.A. (Eds.) <em>The Genus Epidendrum, </em>Part 3,<em> Icones Orchidacearum </em>4: pl. 773.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E. (2007) <em>Epidendrum megalocoleum.</em> <em>In:</em> Hágsater, E. & Sánchez, L. (Eds.) <em>The Genus Epidendrum, </em>Part. 6<em>, Icones Orchidacearum </em>9: pl. 956.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E. (2016) <em>Epidendrum aida-alvarezii.</em> <em>In:</em> Hágsater, E. & Sánchez, L. (Eds.) <em>The Genus Epidendrum, </em>Part 11<em>. Icones Orchidacearum </em>15: pl. 1570.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E., Navarro, W.C.R. & Quispe-Melgar, H.R. (2020) <em>Epidendrum curimarcense.</em> <em>In</em>: Hágsater, E. & Santiago, E. (eds.) <em>The Genus Epidendrum</em>, Part 13, <em>Icones Orchidacearum</em> 17: pl. 1766.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E., Edquén, J.D. & Santiago, E. (2021) <em>Epidendrum concavitridentes.</em> <em>In:</em> Hágsater, E. & Santiago, E. (Eds.) <em>The Genus Epidendrum, </em>Part 14,<em> Icones Orchidacearum</em> 18: pl. 1862.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hágsater, E. & Santiago, E. (in press) <em>Epidendrum rupestre.</em> <em>In</em>: Hágsater, E. & Santiago, E. (eds.) The Genus <em>Epidendrum,</em> Part 16, <em>Icones Orchidacearum.</em></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Harms, H.A. (1931) <em>Oreopanax oroyanus</em>. <em>In</em>: Bornmüller, J. (Ed.) <em>Notizblatt des Botanischen Gartens und Museums zu</em> <em>Berlin-Dahlem</em> 11: 146–149. https://doi.org/10.2307/3994596</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Jacquin, N. (1760) <em>Epidendrum difforme</em>. <em>In</em>: <em>Enumeratio Systematica Plantarum</em>. Christiani de Lavnoy, Leiden. 29 pp.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lindley, J. (1835) <em>Cavendishia</em>. <em>Edwards’s Botanical Register </em>21: t. 1791. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lindley, J. (1841) <em>Notes upon the Genus</em> <em>Epidendrum</em>. <em>Hooker’s Journal of Botany </em>3: 81–89.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. (1753) <em>Species Plantarum</em>. Ray Society’s Facsimile, London, 395 pp.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. (1759) <em>Systema naturae per regna tria naturae: secundum clases, ordines, géneros, especies, cum characteribus, differentiis, synomiis, locis. </em>Tomusi, London, 1367 pp. https://doi.org/10.5962/bhl.title.542</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus f., C. (1782) <em>Supplementum Plantarum Systematis Vegetabilium</em>. Ed. 2. Impensis Orphanotrophei, Brunsvigae, pp. 1–468. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Mendoza, W. (2005) Especie nueva de <em>Polylepis </em>(Rosaceae) de la cordillera Vilcabamba (Cusco, Peru). <em>Revista Peruana de Biología</em> 12: 103–106. https://doi.org/10.15381/rpb.v12i1.2364</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Navarro-Romo, W.C., Quispe-Melgar, H.R. & Hágsater, E. (2020) <em>Epidendrum curimarcense</em> (Orchidaceae), a new species from Central Peru. <em>Lankesteriana</em> 20: 7–13. https://doi.org/ 10.15517/lank.v20i1.40781 </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Pessoa, E.M, Cordeiro, J.M.P, Felix, L.P, Almeida, E.M, Costa, L., Nepomuceno, A., Souza, G., Chase, M.W, Alves, M. & Van Den Berg, C. (2021) Too many species: morphometrics, molecular phylogenetics and genome structure of a Brazilian species complex in <em>Epidendrum</em> (Laeliinae; Orchidaceae) reveal fewer species than previously thought. <em>Botanical Journal of the Linnean Society</em> 195: 161–188. https://doi.org/10.1093/botlinnean/boaa071</span></span></span></p>
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