<?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>S1405-27682026000100001</article-id>
<article-id pub-id-type="doi">10.18387/polibotanica.61.1</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[La familia Buxaceae en México]]></article-title>
<article-title xml:lang="en"><![CDATA[The Buxaceae family in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández N.]]></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 Escuela Nacional de Ciencias Biológicas Departamento de Botánica]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2026</year>
</pub-date>
<numero>61</numero>
<fpage>1</fpage>
<lpage>21</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-27682026000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-27682026000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-27682026000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La familia Buxaceae, integra arbustos y pequeños árboles de amplia distribución mundial, presenta en México una diversidad singular. En este trabajo se revisa su representación en el país mediante análisis bibliográfico, observaciones de campo y revisión crítica de aproximadamente trescientos especímenes de herbario. Se reconocen seis especies agrupadas en dos géneros: Buxus con B. bartlettii, B. lancifolia, B. mexicana, B. moctezumae y B. pubescens y Sealya, monotípico con S. conzattii, endémico de Oaxaca y Chiapas. La validación formal de este último género constituye un aporte relevante, al confirmar un linaje mesoamericano claramente diferenciado de los taxones asiáticos de Sarcococca. La revisión permitió precisar caracteres morfológicos diagnósticos, actualizar la nomenclatura y elaborar claves de identificación. Desde una perspectiva biogeográfica, las especies muestran afinidad con ecosistemas montanos húmedos y selvas subperennifolias, salvo casos particulares como B. mexicana, adaptada a ambientes xerófitos, y B. pubescens, restringida a las Islas Marías. Estos hallazgos refuerzan la necesidad de estrategias de conservación, dado que varias especies presentan distribuciones restringidas y hábitats vulnerables. El estudio proporciona una base taxonómica y biogeográfica sólida para investigaciones futuras en sistemática, filogenia y conservación de Buxaceae en México.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The Buxaceae, a family mainly composed of shrubs and small trees with a wide global distribution, displays a distinctive diversity in Mexico. This study reviews its national representation through bibliographic research, field observations, and critical examination of approximately three hundred herbarium specimens. Six species grouped into two genera are recognized: Buxus with B. bartlettii, B. lancifolia, B. mexicana, B. moctezumae, and B. pubescens and Sealya, a monotypic genus represented by S. conzattii, endemic to Oaxaca and Chiapas. The formal validation of Sealya represents a significant contribution, confirming a Mesoamerican lineage clearly distinct from Asian Sarcococca. The revision clarified diagnostic morphological characters, updated nomenclature, and provided identification keys. From a biogeographic perspective, most species are associated with humid montane forests and sub-evergreen tropical forests, with notable exceptions such as B. mexicana, adapted to xerophytic environments, and B. pubescens, restricted to the Islas Marías. These findings highlight the need for conservation strategies, since several species have narrow distributions and vulnerable habitats. This work establishes a robust taxonomic and biogeographic framework for future studies in systematics, phylogeny, and conservation of Buxaceae in Mexico.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Taxonomía]]></kwd>
<kwd lng="es"><![CDATA[Sistemática]]></kwd>
<kwd lng="es"><![CDATA[Flora de México]]></kwd>
<kwd lng="es"><![CDATA[Conservación]]></kwd>
<kwd lng="es"><![CDATA[Buxus]]></kwd>
<kwd lng="es"><![CDATA[Sealya]]></kwd>
<kwd lng="en"><![CDATA[Taxonomy]]></kwd>
<kwd lng="en"><![CDATA[Systematics]]></kwd>
<kwd lng="en"><![CDATA[Flora of Mexico]]></kwd>
<kwd lng="en"><![CDATA[Conservation]]></kwd>
<kwd lng="en"><![CDATA[Buxus]]></kwd>
<kwd lng="en"><![CDATA[Sealya]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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