<?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>S0187-71512017000300059</article-id>
<article-id pub-id-type="doi">10.21829/abm120.2017.1264</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio preliminar del género Quercus (Fagaceae) en Tamaulipas, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Preliminary study of the genus Quercus (Fagaceae) in Tamaulipas, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Mojica]]></surname>
<given-names><![CDATA[Erika]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valencia-A.]]></surname>
<given-names><![CDATA[Susana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Herbario Nacional]]></institution>
<addr-line><![CDATA[Mx. ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<numero>120</numero>
<fpage>59</fpage>
<lpage>111</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-71512017000300059&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512017000300059&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512017000300059&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes y Objetivos:  El estado de Tamaulipas se ubica en el noreste de México, región considerada con alta riqueza de encinos, pero carente de inventarios y de herramientas para identificar las especies de Quercus. El objetivo de este trabajo es conocer la riqueza específica del género Quercus en Tamaulipas y proporcionar herramientas para su identificación.  Métodos:  Se revisaron los ejemplares de Quercus depositados en los herbarios CHAP, ENCB, FCME, HUAP, INEGI, INIF y MEXU; así como los ejemplares escaneados del género Quercus de Tamaulipas de los herbarios MO y K disponibles en la página electrónica de Trópicos y los tipos de las especies en JSTOR Global Plants. Paralelamente se revisaron las publicaciones de Tamaulipas, particularmente las listas florísticas que incluyen el género Quercus, resultando en una lista preliminar de especies colectadas y reportadas. La revisión de ejemplares y el reconocimiento de los sinónimos permitió depurar la lista de especies. Con base en la información anterior, se prepararon las descripciones de las especies de encinos.  Resultados clave:  Se reconocen y describen 37 especies del género Quercus para Tamaulipas: 20 de la sección Lobatae y 17 de Quercus. Además, se proporciona una clave dicotómica para su identificación, dibujos de cada una de ellas, datos de distribución, y fenología de cada especie.  Conclusiones:  Se confirmó la presencia de Q. durifolia, Q. invaginata, Q. paxtalensis y Q. potosina que no se habían mencionado antes para el estado. Tamaulipas se ubica en el quinto lugar en cuanto a riqueza de encinos después de Oaxaca, Puebla, San Luis Potosí y Jalisco. La riqueza de encinos se concentra en el sur del estado. Miquihuana, Jaumave y Victoria son los municipios más diversos en Quercus. Debe llevarse a cabo trabajo de campo para incrementar la colecta lo que seguramente modificará las cifras de las especies de este estudio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background and Aims: The state of Tamaulipas is located in northeastern Mexico, a region conside-red species-rich in oaks; however, inventories and tools for identifying species of the genus Quercus are lacking. The aim of this work is to know the species richness of the genus Quercus in Tamaulipas, as well as provide tools for identifying them.  Methods: The specimens of the genus Quercus deposited in the herbaria CHAP, ENCB, FCME, HUAP, INEGI, INIF and MEXU were reviewed; additionally, the scanned specimens of the genus Quercus of Tamaulipas from the herbaria MO and K were consulted on the Tropicos web page, as well as the types available on the page JSTOR Global Plants. Parallely, publications about Tamaulipas with emphasis on floristic lists including the genus Quercus were reviewed, resulting in a preliminary list of species collected and reported for this state. The review of specimens and the recognition of respective synonyms allowed to purify the list of species. Based on this information descriptions of the oak species were prepared.  Key results: We recognize and describe 37 species of the genus Quercus for Tamaulipas; 20 belong to the section Lobatae and 17 to the section Quercus. In addition, a dichotomous identification key is provided, as well as drawings, distribution and phenological data of each species.  Conclusions: The presence of Quercus durifolia, Q. invaginata, Q. paxtalensis, and Q. potosina has been confirmed, which had not been mentioned before for the state. Tamaulipas ranks fifth in terms of oak richness, after the states of Oaxaca, Puebla, San Luis Potosí, and Jalisco. Oak species richness is concentrated in southern Tamaulipas. Miquihuana, Jaumave, and Victoria are the municipalities with the largest diversity of oaks. Fieldwork should be carried out to increase collections, which will cer-tainly result in modification of the species numbers of the present study.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[conservación]]></kwd>
<kwd lng="es"><![CDATA[distribución]]></kwd>
<kwd lng="es"><![CDATA[encinos]]></kwd>
<kwd lng="es"><![CDATA[endemismo]]></kwd>
<kwd lng="es"><![CDATA[riqueza de especies]]></kwd>
<kwd lng="en"><![CDATA[conservation]]></kwd>
<kwd lng="en"><![CDATA[distribution]]></kwd>
<kwd lng="en"><![CDATA[endemism]]></kwd>
<kwd lng="en"><![CDATA[oaks]]></kwd>
<kwd lng="en"><![CDATA[species richness]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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