<?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>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982016000200419</article-id>
<article-id pub-id-type="doi">10.17129/botsci.449</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[What is Ceratozamia Mexicana (Zamiaceae)?]]></article-title>
<article-title xml:lang="es"><![CDATA[¿Qué es Ceratozamia mexicana (Zamiaceae)?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vovides]]></surname>
<given-names><![CDATA[Andrew P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Stevenson]]></surname>
<given-names><![CDATA[Dennis Wm.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Farrera]]></surname>
<given-names><![CDATA[Miguel Angel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Mendoza]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Avendaño]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Ecología A.C.  ]]></institution>
<addr-line><![CDATA[Xalapa Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,New York Botanical Garden  ]]></institution>
<addr-line><![CDATA[Bronx New York]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,UNICACH Instituto de Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[Tuxtla Gutierrez Chiapas]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>94</volume>
<numero>2</numero>
<fpage>419</fpage>
<lpage>429</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982016000200419&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982016000200419&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982016000200419&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Explorations in central Veracruz on the Transvolcanic Mexican Belt and regions explored by 19th century botanists we found various populations of Ceratozamia whose taxonomic status is not yet completely clear. Especially two populations of C. mexicana with distinct morphology; one population at El Esquilón considered as C. mexicana by Chamberlain and other authors, and another population at El Mirador that Stevenson found a voucher at the herbarium in Paris with oblanceolate leaflets collected by Ghiesbrecht and designated it as Brongniart&#8217;s holotype. The plants from El Mirador are comparable to the holotype of C. mexicana, but those at El Esquilón do not. Stevenson later also found a voucher at Kew by Thiselton-Dyer as C. mexicana var. tenuis from Mexico with linear-lanceolate leaflets that is similar to the plants at the El Esquilón population. An analysis of 11 leaflet anatomical characters gave a significant discriminant pattern (Wilk&#8217;s lambda 0.00015 P &lt; 0.01). The squared Mahalanobis distances were also significant (P &lt; 0.05) and the first canonic variable showed that 93.4 % of the variation was due to the anatomical characters. A new nomenclatural combination is proposed and Thiselton-Dyer&#8217;s voucher assigned as the lectotype of Ceratozamia tenuis. Epitypes were also designated for the two species in support of the anatomical analysis as well as a description for both species given.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las exploraciones sobre la Faja Volcánica Transmexicana en la región central de Veracruz y regiones exploradas por los botánicos del siglo XIX permitieron encontrar varias poblaciones de Ceratozamia cuyo estatus taxonómico no está completamente claro. En especial, dos poblaciones de C. mexicana cuya morfología es distinta; una población en la localidad El Esquilón considerada como C. mexicana por Chamberlain y otros autores, así como otra en la localidad El Mirador donde Stevenson encontró un ejemplar en el herbario de París con foliolos oblongo-lanceolados colectada por Ghiesbrecht y lo asignó como holotipo de Brongniart. La población explorada de El Mirador concuerda con el holotipo de C. mexicana, pero la población del Esquilón no. Stevenson más adelante encontró también en Kew un ejemplar de Thiselton-Dyer nombrado C. mexicana var. tenuis proveniente de México con foliolos linear-lanceolados que es semejante con la población de El Esquilón. Un análisis de 11 caracteres anatómicos foliares de especímenes de ambas poblaciones arrojó un patrón de discriminantes significativo (Wilk&#8217;s Lambda: 0.00015 P &lt; 0.01). Las distancias cuadradas de Mahalanobis también fueron significativas (P &lt; 0.05), y la primera variable canónico mostró que el 93.4 % de la variación fue debida a los caracteres anatómicos. Se propuso un cambio de combinación nomenclatural y se asignó lectotipo del ejemplar de Thiselton-Dyer como Ceratozamia tenuis. Se designó epitipos para las dos especies en apoyo al análisis anatómico y se presenta la descripción para ambas especies.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Ceratozamia tenuis]]></kwd>
<kwd lng="en"><![CDATA[cycad leaflet anatomical analysis]]></kwd>
<kwd lng="en"><![CDATA[cycad taxonomy]]></kwd>
<kwd lng="es"><![CDATA[Análisis anatómico de foliolos]]></kwd>
<kwd lng="es"><![CDATA[Ceratozamia tenuis]]></kwd>
<kwd lng="es"><![CDATA[taxonomía de cicadas]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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