<?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>1405-2768</journal-id>
<journal-title><![CDATA[Polibotánica]]></journal-title>
<abbrev-journal-title><![CDATA[Polibotánica]]></abbrev-journal-title>
<issn>1405-2768</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-27682025000200015</article-id>
<article-id pub-id-type="doi">10.18387/polibotanica.60.2</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Revisión del género Karwinskia (Rhamnaceae) en México]]></article-title>
<article-title xml:lang="en"><![CDATA[Review of the Karwinskia genus (Rhamnaceae) in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández Nava]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arreguín Sánchez]]></surname>
<given-names><![CDATA[María de la Luz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional Departamento de Botánica Escuela Nacional de Ciencias Biológicas]]></institution>
<addr-line><![CDATA[ ]]></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>60</numero>
<fpage>15</fpage>
<lpage>38</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-27682025000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-27682025000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-27682025000200015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se presenta una revisión taxonómica detallada del género Karwinskia Zucc. (Rhamnaceae), un grupo de arbustos nativos de América cuyo centro de diversidad se encuentra en México. A pesar de su relevancia ecológica y económica, las especies de Karwinskia han recibido poca atención en estudios taxonómicos. En este trabajo se describen 11 especies para México: K. calderoni, K. humboldtiana, K. johnstonii, K. latifolia, K. mollis, K. parvifolia, K. rzedowskii, K. subcordata, K. umbellata, K. tehuacana y K. venturae, siendo K. humboldtiana la de mayor distribución. La identificación de las especies se realizó mediante una combinación de características morfológicas y ecológicas. Este trabajo incluye una clave dicotómica y descripciones actualizadas de las especies presentes en México.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract A detailed taxonomic review of the genus Karwinskia Zucc. (Rhamnaceae) is presented, a group of shrubs native to the Americas with Mexico as its center of diversity. Despite their ecological and economic importance, Karwinskia species have received little attention in taxonomic studies. In this paper, 11 species are described for Mexico.: K. calderoni, K. humboldtiana, K. johnstonii, K. latifolia, K. mollis, K. parvifolia, K. rzedowskii, K. subcordata, K. umbellata, K. tehuacana, and K. venturae, with K. humboldtiana being the most widely distributed. Species identification was based on a combination of morphological and ecological characteristics. This study includes a dichotomous key and updated descriptions of the species found in Mexico.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[taxonomía]]></kwd>
<kwd lng="es"><![CDATA[diversidad]]></kwd>
<kwd lng="es"><![CDATA[clave dicotómica]]></kwd>
<kwd lng="es"><![CDATA[descripciones morfológicas]]></kwd>
<kwd lng="es"><![CDATA[especies mexicanas]]></kwd>
<kwd lng="en"><![CDATA[taxonomy]]></kwd>
<kwd lng="en"><![CDATA[diversity]]></kwd>
<kwd lng="en"><![CDATA[dichotomous key]]></kwd>
<kwd lng="en"><![CDATA[morphological descriptions]]></kwd>
<kwd lng="en"><![CDATA[Mexican species]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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