<?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>S0187-71512016000300021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Variación morfológica de Coryphantha (Cactaceae): un enfoque multivariado]]></article-title>
<article-title xml:lang="en"><![CDATA[Morphological variation of Coryphantha (Cactaceae): a multivariate approach]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-Benítez]]></surname>
<given-names><![CDATA[Balbina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias]]></surname>
<given-names><![CDATA[Salvador]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cervantes-Sandoval]]></surname>
<given-names><![CDATA[Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Biología Jardín Botánico]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Estudios Superiores Zaragoza Laboratorio de Aplicaciones Computacionales]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>07</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>07</month>
<year>2016</year>
</pub-date>
<numero>116</numero>
<fpage>21</fpage>
<lpage>47</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-71512016000300021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512016000300021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512016000300021&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Coryphantha tiene entre 43 y 67 especies. Los patrones de variación morfológica del género se han interpretado de distintas formas y han conducido a una taxonomía inestable, de manera que aún no se ha establecido un consenso en la delimitación de las especies. Clasificaciones previas de Coryphantha se han basado en caracteres cualitativos. Para dilucidar y circunscribir especies de Coryphantha se emplearon diferentes técnicas de análisis multivariado. Se muestrearon un total de 1840 individuos, 467 ejemplares en campo y 1373 registros herborizados de 48 taxa del género. Se emplearon 28 caracteres vegetativos y reproductivos de los cuales 17 fueron cuantitativos y 11 cualitativos. El análisis de conglomerados indicó la presencia de dos grandes grupos organizados por la presencia o ausencia de glándulas extraflorales. Los análisis discriminantes para cada subgrupo formado por los análisis de conglomerados permitieron circunscribir con base en variables morfométricas a la mayoría de las especies analizadas. Con base en los caracteres morfológicos y los análisis multivariados se discute el reconocimiento de categorías taxonómicas a nivel de especie o subespecie. Se reconocen 45 especies y tres subespecies.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Coryphantha consists of 43 to 67 species. This genus exhibit patterns of morphological variations that have been understood differently and have led to an unstable taxonomy, resulting in the fact that a consensus on the delimitation of species has yet to be reached. Previous classifications are based on qualitative characters. In order to clarify and circumscribe species of Coryphantha, different multivariate analysis techniques were used. A total of 1840 individuals among 48 taxa were examined; 467 in the field and 1373 from herbarium specimens. We used 28 vegetative and reproductive characters of which 17 were quantitative and 11 qualitative. Cluster analysis indicated the presence of two major groups based on the presence or absence of extrafloral glands. Discriminant analysis for each subgroup consisting of the cluster analysis allowed circumscription based on morphometric variables of the majority of the analyzed species. Based on morphological characters and multivariate analysis, recognition of taxonomic categories at species or subspecies level is discussed. 45 species and three subspecies are recognized.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[análisis de conglomerados]]></kwd>
<kwd lng="es"><![CDATA[análisis discriminante]]></kwd>
<kwd lng="es"><![CDATA[Cactaceae]]></kwd>
<kwd lng="es"><![CDATA[Coryphantha]]></kwd>
<kwd lng="es"><![CDATA[taxonomía]]></kwd>
<kwd lng="en"><![CDATA[Cactaceae]]></kwd>
<kwd lng="en"><![CDATA[cluster analysis]]></kwd>
<kwd lng="en"><![CDATA[Coryphantha]]></kwd>
<kwd lng="en"><![CDATA[discriminant analysis]]></kwd>
<kwd lng="en"><![CDATA[taxonomy]]></kwd>
</kwd-group>
</article-meta>
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