<?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>S0187-71512025000100136</article-id>
<article-id pub-id-type="doi">10.21829/abm132.2025.2485</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[A new gypsophilous species of Echeveria (Crassulaceae) from Guerrero, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Una nueva especie gipsófila de Echeveria (Crassulaceae) de Guerrero, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Brunel]]></surname>
<given-names><![CDATA[Juan Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Olivares]]></surname>
<given-names><![CDATA[Jesús Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosales-Martínez]]></surname>
<given-names><![CDATA[C. Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Campos]]></surname>
<given-names><![CDATA[J. Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quirarte-Tejeda]]></surname>
<given-names><![CDATA[Jaime A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Michigan Department of Ecology and Evolutionary Biology ]]></institution>
<addr-line><![CDATA[Ann Arbor Michigan]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Independent researcher  ]]></institution>
<addr-line><![CDATA[Tlapa de Comonfort Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico y de Estudios Superiores de Occidente  ]]></institution>
<addr-line><![CDATA[Tlaquepaque Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Guadalajara Centro Universitario de Ciencias Biológicas y Agropecuarias ]]></institution>
<addr-line><![CDATA[Zapopan Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Grupo de Estudio de Cactáceas y Vida Silvestre del Occidente, A.C.  ]]></institution>
<addr-line><![CDATA[Comala Colima]]></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=S0187-71512025000100136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512025000100136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512025000100136&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background and Aims:  Recent botanical explorations in southern Mexico have led to the discovery of new species of Crassulaceae and gypsophilous flora. During an exploration near Tlapa de Comonfort in the state of Guerrero, an unknown Echeveria of the series Gibbiflorae was documented on gypsum outcrops. The objective of this work was to record its characteristics, describe it as a new species to science, and develop an identification key for the members of the series Gibbiflorae from Guerrero.  Methods:  Living plants of the new species of Echeveria were collected and documented. Specialized literature, protologues, and herbarium specimens of members in the series Gibbiflorae were studied and a morphological comparison was conducted. A distribution map was elaborated, and its conservation status was assessed according to IUCN Red List criteria.  Key results:  Echeveria jeivana is proposed as a new species of the series Gibbiflorae and is endemic to the state of Guerrero. It is similar to E. gibbiflora and E. grisea, from which it mainly differs by the presence of red nectaries with white base, entire and non-undulate leaf margins, and its occurrence on gypsum outcrops. Given its limited distribution and specific habitat, it is classified as Critically Endangered (CR) based on IUCN criteria.  Conclusions:  Echeveria jeivana contributes to the knowledge of Echeveria series Gibbiflorae and the gypsophilous flora of southern Mexico. It also highlights the need for further exploration and conservation of the gypsum soil ecosystems, which are centers of high diversity and endemism.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes y Objetivos:  Exploraciones botánicas recientes en el sur de México han derivado en el descubrimiento de nuevas especies de Crassulaceae y de flora gipsófila. Durante una exploración cerca de Tlapa de Comonfort, en el estado de Guerrero, se documentó una Echeveria desconocida de la serie Gibbiflorae en afloramientos de yeso. El objetivo de este trabajo fue registrar sus características, describirla como una nueva especie para la ciencia y desarrollar una clave de identificación para los miembros de la serie Gibbiflorae de Guerrero.  Métodos:  Se recolectaron y documentaron plantas vivas de la nueva especie de Echeveria. Se estudiaron literatura especializada, protólogos y especímenes de herbario de los miembros de la serie Gibbiflorae, y se realizó una comparación morfológica. Se elaboró un mapa de distribución y se evaluó el estado de conservación según los criterios de la Lista Roja de la UICN.  Resultados clave:  Echeveria jeivana se propone como una nueva especie de la serie Gibbiflorae y es endémica del estado de Guerrero. Es similar a E. gibbiflora y E. grisea, de las cuales se diferencia principalmente por la presencia de nectarios rojos con base blanca, márgenes de las hojas enteros y no ondulados, y su ocurrencia en afloramientos de yeso. Dados su distribución limitada y hábitat específico, se clasifica como En Peligro Crítico (CR) según los criterios de la UICN.  Conclusiones:  Echeveria jeivana contribuye al conocimiento de Echeveria serie Gibbiflorae y de la flora gipsófila del sur de México. Asimismo, resalta la necesidad de realizar más exploraciones y acciones de conservación en los ecosistemas de suelos de yeso, los cuales son centros de alta diversidad y endemismo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Gibbiflorae]]></kwd>
<kwd lng="en"><![CDATA[gypsum outcrops]]></kwd>
<kwd lng="en"><![CDATA[microendemic species]]></kwd>
<kwd lng="en"><![CDATA[southern Mexico]]></kwd>
<kwd lng="es"><![CDATA[afloramientos de yeso]]></kwd>
<kwd lng="es"><![CDATA[especie microendémica]]></kwd>
<kwd lng="es"><![CDATA[Gibbiflorae]]></kwd>
<kwd lng="es"><![CDATA[sur de Mexico]]></kwd>
</kwd-group>
</article-meta>
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