Abstract
A recent exploration in Mixteca Alta, state of Oaxaca, and the morphological review of herbarium specimens allowed the identification of a new species of Xochiquetzallia, genus recently segregated from the paraphyletic Dandya. The objective of this work is to describe and illustrate Xochiquetzallia magnifolia, which can be recognized by its leaf size, scape, floral morphology, number of flowers per umbel, and inclined style. Due to its limited occurrence area and known distribution in one locality, it is considered vulnerable (VU) according to the guidelines of the International Union for Conservation of Nature (IUCN).
References
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<p>Sprengel, C.P.J. (1826) <em>Systema Vegetabilium</em>,<em> editio decima sexta</em> 3: 615.</p>
<p>Torrey, J. (1859) <em>Report on the United States and Mexican boundary survey, botany of the boundary</em> 2 (1): 198.</p>
<p>Vasey, G. (1892) Monograph of the Grasses of the United States and British America [Part 1.]. <em>Contributions from the United States National Herbarium</em> 3 (1): 66.</p>
<p>Bachman, S., Moat, J., Hill, A.W., De La Torre, J. & Scott, B. (2011) Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool, Version BETA. E-Infrastructures for data publishing in biodiversity science. <em>ZooKeys</em> (150): 117–126. https://doi.org/10.3897/zookeys.150.2109</p>
<p>Bentham, G. (1839) <em>Plantas Hartwegianas imprimis mexicanas</em>: 70–71.</p>
<p>Cavanilles, A.J. (1794) <em>Icones et Descriptiones Plantarum</em> 3 (1): 10.</p>
<p>Cavanilles, A.J. (1797) <em>Icones et Descriptiones Plantarum</em> 4: 3–4.</p>
<p>De Candolle, A.P. (1824) <em>Prodromus Systematis Naturalis Regni Vegetabilis</em> 1: 242.</p>
<p>ESRI (2011) <em>ArcGIS Desktop: Release 10. </em>Redlans, CA: Environmental Systems Research Institute.</p>
<p>García-Mendoza, A.J., Franco-Martínez, I.S. & Sandoval-Gutiérrez, D. (2019) Cuatro especies nuevas de <em>Agave</em> (Asparagaceae, Agavoideae) del sur de México. <em>Acta Botanica Mexicana</em> 126: e1461. https://doi.org/10.21829/abm126.2019.1461</p>
<p>García-Mendoza, A.J., Sandoval-Gutiérrez, D. & Redonda-Martínez, R. (2020) <em>Mixtecalia</em>, a new monotypic genus of the subtribe Tussilagininae (Senecioneae, Asteraceae) from the state of Oaxaca, Mexico. <em>Phytotaxa</em> 438 (2): 119–132. https://doi.org/10.11646/phytotaxa.438.2.5</p>
<p>Gutiérrez, J. (2009) <em>Sistemática del género Dandya H.E. Moore (Themidaceae)</em>. Tesis MSc. Colegio de Postgraduados, Campus Montecillo, Postgrado en Botánica, Texcoco, México, 112 pp.</p>
<p>Gutiérrez, J. & Terrazas, T. (2020) <em>Xochiquetzallia</em> (Asparagaceae, Brodiaeoideae), a new genus segregated from the paraphyletic <em>Dandya</em>. <em>PhytoKeys</em> 139: 39–49. https://doi.org/10.3897/phytokeys.139.46890</p>
<p>Gutiérrez, J., Terrazas, T., Hernández-Sandoval, L. & Martínez-Cabrera, D. (2010) Anatomía floral de los géneros del complejo <em>Milla </em>(Themidaceae). <em>Boletín de la Sociedad Botánica de México</em> 87: 1–12. https://doi.org/10.17129/botsci.287</p>
<p>Gutiérrez, J., Terrazas, T., Luna-Vega, I. & Salazar, G. (2017) Phylogenetic analyses of the <em>Milla </em>complex (Brodiaeoideae: Asparagaceae), with emphasis on <em>Milla. Botanical Journal of the Linnean Society</em> 185 (4): 445–462. https://doi.org/10.1093/botlinnean/box074</p>
<p>IUCN. (2017) Guidelines for Using the IUCN Red List Categories and Criteria. Version 23. Prepared by the Standards and Petitions Subcommittee. Available from: http://cmsdocs.s3.amazona.ws.com/RedListGuidelines.pdf (accessed 28 June 2022)</p>
<p>JSTOR (2021) Global Plants. ITHAKA, New York. Available from: https://plants.jstor.org/ (Retrieved 25 November 2021)</p>
<p>Kunth, K.S. (1815) <em>Nova Genera et Species Plantarum</em> (quarto ed.) 1: 300.</p>
<p>Lenz, L.W. (1971) Two new species of <em>Dandya </em>(Liliaceae) from Mexico and a reexamination of <em>Bessera </em>and <em>Behria. Aliso</em> 7 (3): 313–320. https://doi.org/10.5642/aliso.19710703.03</p>
<p>Martius, K.F.P.v. (1838) <em>Historia Naturalis Palmarum</em> 3 (7): 244.</p>
<p>Moore, H.E. (1953) The genus <em>Milla </em>(Amaryllidaceae-Allieae) and its allies. <em>Gentes Herbarium </em>8: 262–294.</p>
<p>Morrone, J.J., Escalante, T. & Rodriguez-Tapia, G. (2017) Mexican biogeographic provinces: Map and shapefiles. <em>Zootaxa</em> 4277 (2): 277–279. http://dx.doi.org/10.11646/zootaxa.4277.2.8</p>
<p>Reeder, J.R. & Reeder, C.G. (1963) Notes on Mexican grasses. I. New and noteworthy species of <em>Bouteloua</em>. <em>Brittonia</em> 15: 215–221. https://doi.org/10.2307/2805162</p>
<p>Salazar, G.A., Chávez-Rendón, C. & Jiménez-Machorro, R. (2016) Floral similarity and vegetative divergence in a new species of <em>Bletia</em> (Orchidaceae) from Mexico. <em>Phytotaxa</em> 275 (2): 112–126. https://doi.org/10.11646/phytotaxa.275.2.3</p>
<p>Sprengel, C.P.J. (1826) <em>Systema Vegetabilium</em>,<em> editio decima sexta</em> 3: 615.</p>
<p>Torrey, J. (1859) <em>Report on the United States and Mexican boundary survey, botany of the boundary</em> 2 (1): 198.</p>
<p>Vasey, G. (1892) Monograph of the Grasses of the United States and British America [Part 1.]. <em>Contributions from the United States National Herbarium</em> 3 (1): 66.</p>