<?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>0187-7151</journal-id>
<journal-title><![CDATA[Acta botánica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Act. Bot. Mex]]></abbrev-journal-title>
<issn>0187-7151</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C., Centro Regional del Bajío]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-71512025000100129</article-id>
<article-id pub-id-type="doi">10.21829/abm132.2025.2466</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Echeveria barbosae (Crassulaceae), una especie nueva del estado de Guanajuato, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Echeveria barbosae (Crassulaceae), a new species from the state of Guanajuato, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Calix]]></surname>
<given-names><![CDATA[Emmanuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guadián-Marín]]></surname>
<given-names><![CDATA[Jesús Israel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Ecología, A.C Centro Regional del Bajío ]]></institution>
<addr-line><![CDATA[Pátzcuaro Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Romita  ]]></institution>
<addr-line><![CDATA[Romita Guanajuato]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<numero>132</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-71512025000100129&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512025000100129&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512025000100129&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes y Objetivos:  Echeveria (Crassulaceae) es un género americano conformado por 204 especies, de las que 164 se registran de México, por lo que este país se considera su centro de diversidad y endemismo. No obstante que existen diversas obras del grupo, durante las exploraciones botánicas se siguen descubriendo plantas que no corresponden con las especies ya descritas. Los objetivos del artículo fueron describir una especie de Echeveria como nueva para la ciencia, compararla con las parecidas y evaluar su estado de conservación.  Métodos:  Se realizaron exploraciones en la Sierra de Pénjamo, Guanajuato, donde se descubrió una Echeveria que no se logró identificar. Además, se visitaron parajes de donde se tienen registros de Echeveria dactylifera y E. novogaliciana, especies morfológicamente similares a la no descrita. Se realizaron descripciones morfológicas de las plantas y se herborizaron los ejemplares para enviarlos a los herbarios IEB y MEXU. Finalmente, se determinó el estado de conservación de la nueva especie según los criterios y categorías de la UICN.  Resultados clave:  Se propone a Echeveria barbosae como especie nueva para la ciencia, se compara con E. dactylifera y E. novogaliciana con las que se asemeja y se le asigna el estatus de Peligro Crítico (CR).  Conclusiones:  Echeveria barbosae se asemeja a E. dactylifera y a E. novogaliciana, pero se diferencia de ambas en la forma y el tamaño de las hojas, así como en aspectos de la flor. Estas tres especies, junto con E. marianae, E. kristenii y E. rulfiana, presentan un par de apéndices en la cara interna de los pétalos. El nuevo taxón es endémico del suroeste de Guanajuato. Con la publicación de esta especie aumentan a 12 las Echeveria conocidas de Guanajuato.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background and Aims:  Echeveria (Crassulaceae) is an American genus consisting of about 204 species, 164 of which have been recorded from Mexico, as a consequence of which this country is considered to be its center of diversity and endemism. Although several studies on this group exist, plants that do not correspond with earlier described species are continuously found during botanical explorations. The aims of this article were to describe an Echeveria species which is new to science, compare it with similar species, and assess its conservation status.  Methods: Explorations were carried out in the Sierra de Pénjamo, Guanajuato, where an unidentified Echeveria was discovered. In addition, we visited sites with records of Echeveria dactylifera and E. novogaliciana, species morphologically similar to the undescribed one. Morphological descriptions of the plants were made and the specimens were herborized to be sent to the herbaria IEB and MEXU. Finally, the conservation status of the new species was determined according to IUCN criteria and categories.  Key results: Echeveria barbosae is proposed as a species new to science, is compared to E. dactylifera and E. novogaliciana, to which it is similar, and assigned the status of Critically Endangered (CR).  Conclusions:  Echeveria barbosae resembles E. dactylifera and E. novogaliciana, but differs from both in leaf shape and size, as well as in aspects of the flower. These three species, along with E. marianae, E. kristenii and E. rulfiana, have a pair of appendages on the inner side of the petals. The new taxon is endemic to southwestern Guanajuato. With the publication of this species, the number of Echeveria known from Guanajuato increases to 12.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[apéndices en pétalos]]></kwd>
<kwd lng="es"><![CDATA[especie endémica]]></kwd>
<kwd lng="es"><![CDATA[especie en Peligro Crítico]]></kwd>
<kwd lng="es"><![CDATA[Gibbiflorae]]></kwd>
<kwd lng="es"><![CDATA[Pénjamo]]></kwd>
<kwd lng="en"><![CDATA[Critically Endangered Species]]></kwd>
<kwd lng="en"><![CDATA[endemic species]]></kwd>
<kwd lng="en"><![CDATA[Gibbiflorae]]></kwd>
<kwd lng="en"><![CDATA[Pénjamo]]></kwd>
<kwd lng="en"><![CDATA[petal appendages]]></kwd>
</kwd-group>
</article-meta>
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