<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982023000100302</article-id>
<article-id pub-id-type="doi">10.17129/botsci.3156</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Una especie nueva de Sedum sección Pachysedum (Crassulaceae) y un análisis de la diversidad del género en la Sierra Madre Occidental, México]]></article-title>
<article-title xml:lang="en"><![CDATA[A new species of Sedum section Pachysedum (Crassulaceae) and a diversity analysis of the genus in the Sierra Madre Occidental, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castro-Castro]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ávila-González]]></surname>
<given-names><![CDATA[Heriberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Bernal]]></surname>
<given-names><![CDATA[Marco Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Piedra-Leandro]]></surname>
<given-names><![CDATA[Norma Leticia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Gallegos]]></surname>
<given-names><![CDATA[Jesús Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Aguilar]]></surname>
<given-names><![CDATA[Edmi Itzel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,aff2  ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Jardín Etnobiológico Estatal de Durango  ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Sinaloa  ]]></institution>
<addr-line><![CDATA[Cosalá Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Autónoma de Occidente  ]]></institution>
<addr-line><![CDATA[Culiacán Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<volume>101</volume>
<numero>1</numero>
<fpage>302</fpage>
<lpage>312</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982023000100302&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982023000100302&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982023000100302&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: La Zona de Transición Mexicana representa un centro de diversificación y área de endemismo para Sedum subgénero Sedum. Las provincias biogeográficas Sierra Madre del Sur, Faja Volcánica Mexicana, Sierra Madre Oriental y Sierra Madre Occidental (SMO) reúnen la mayor diversidad del subgénero. La SMO destaca por el endemismo de Sedum, por lo que continuar con la exploración y estudio del grupo en el área podría aportar al descubrimiento de especies nuevas.  Pregunta:  ¿Podría el análisis crítico de la morfología de individuos de Sedum encontrados en exploraciones recientes en la SMO mostrar la existencia de especies no descritas?  Especies de estudio: Especies del género Sedum.  Sitio y años de estudio:  Sierra Madre Occidental, México, durante los años 2019-2021.  Métodos:  Se realizaron múltiples exploraciones y recolecciones botánicas de Sedum en los estados de Durango y Sinaloa. Los especímenes colectados se sometieron al análisis crítico de su morfología para preparar descripciones y cuadros comparativos entre especies afines morfológicamente. Se obtuvieron, verificaron determinaciones y analizaron registros de Sedum para preparar mapas de distribución en la SMO.  Resultados:  Se propone a Sedum acaxee como una especie nueva de la sección Pachysedum. La descripción se acompaña de fotografías, un cuadro de morfología comparada y una lista y mapas de Sedum en la SMO.  Conclusiones: La alta proporción de localidades tipo (26 spp.) y endemismo (23 spp.) de Sedum para la SMO resaltan la alta diversidad del género en esta provincia y muestran la necesidad de continuar con exploraciones botánicas en este complejo montañoso.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: The Mexican Transition Zone represents a center of diversification and an endemism area for Sedum subgenus Sedum. The Sierra Madre del Sur, Mexican Volcanic Belt, Sierra Madre Oriental and Sierra Madre Occidental (SMO) biogeographic provinces contain the highest diversity of the subgenus. The SMO stands out for the endemism of Sedum, that is why additional exploration and study of the group in the area could contribute to the discovery of new species.  Question: Could the critical analysis of the morphology of Sedum individuals found in recent explorations in the SMO show the existence of undescribed species?  Studied species:  The genus Sedum species.  Study site and dates:  Sierra Madre Occidental, Mexico, during the years 2019-2021.  Methods: Several botanical explorations and collections of Sedum were carried out in Durango and Sinaloa. The collected materials were subjected to critical analysis of their morphology to prepare descriptions and comparative tables contrasting morphologically related species. Records of Sedum were obtained, verified, and analyzed to prepare distribution maps in the SMO.  Results: Sedum acaxee is proposed as a new species of section Pachysedum. The description is accompanied by photographs, a comparative morphology table, and a list and maps of Sedum in SMO.  Conclusions: The high proportion of type localities (26 spp.) and endemism (23 spp.) of Sedum for the SMO highlight the high diversity of the genus in the province and shows the need to continue with botanical explorations in this mountainous complex.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ecorregión Madrense Tropical]]></kwd>
<kwd lng="es"><![CDATA[Sierra Madre Occidental]]></kwd>
<kwd lng="es"><![CDATA[Zona de Transición Mexicana]]></kwd>
<kwd lng="en"><![CDATA[Mexican Transition Zone]]></kwd>
<kwd lng="en"><![CDATA[Sierra Madre Occidental]]></kwd>
<kwd lng="en"><![CDATA[Tropical Madrean Ecoregion]]></kwd>
</kwd-group>
</article-meta>
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