<?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>S2007-42982017000400760</article-id>
<article-id pub-id-type="doi">10.17129/botsci.1865</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diagnóstico del conocimiento taxonómico y florístico de las plantas vasculares del norte de México]]></article-title>
<article-title xml:lang="en"><![CDATA[A diagnosis of the taxonomic and floristic knowledge on vascular plants from northern Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Elizondo]]></surname>
<given-names><![CDATA[M. Socorro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Elizondo]]></surname>
<given-names><![CDATA[Martha]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Enríquez]]></surname>
<given-names><![CDATA[Irma Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tena-Flores]]></surname>
<given-names><![CDATA[Jorge Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Gallegos]]></surname>
<given-names><![CDATA[Jesús Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruacho-González]]></surname>
<given-names><![CDATA[Lizeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Melgoza-Castillo]]></surname>
<given-names><![CDATA[Alicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villarreal-Quintanilla]]></surname>
<given-names><![CDATA[José Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estrada-Castillón]]></surname>
<given-names><![CDATA[Andrés Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional CIIDIR Unidad Durango ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,CONACYT  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Chihuahua Facultad de Zootecnia y Ecología ]]></institution>
<addr-line><![CDATA[Chihuahua Chihuahua]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias Forestales ]]></institution>
<addr-line><![CDATA[Linares Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>95</volume>
<numero>4</numero>
<fpage>760</fpage>
<lpage>779</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982017000400760&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982017000400760&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982017000400760&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes:  El conocimiento taxonómico y florístico de las plantas vasculares del norte de México presenta avances relevantes, aunque disgregados. Por lo anterior, es crítico hacer un diagnóstico para definir estrategias que los unifiquen y complementen.  Preguntas:  ¿cuál es la riqueza y endemismo de las plantas vasculares en el norte de México?, ¿en cuáles de sus áreas deben concentrarse los esfuerzos de exploración?  Sitio de estudio:  norte de México (Chihuahua, Coahuila, Durango y Nuevo León).  Métodos:  Se desarrolló una base de datos de plantas vasculares del norte de México a partir de la del Herbario CIIDIR, complementada con registros provenientes de la Universidad de Chihuahua, Universidad Antonio Narro y Universidad de Nuevo León, así como de revisión de trabajos taxonómicos y de los herbarios ANSM, CFNL, CIIDIR y FZ-UACH. Se calculó la riqueza y endemismo por estado y por ecorregión; se definieron los grupos y áreas geográficas mejor conocidos y los huecos en conocimiento; y se elaboró una relación de los herbarios, programas en botánica y botánicos en la región.  Resultados:  Se registran 8,503 especies, 1,599 géneros y 210 familias de plantas vasculares; 15 géneros son endémicos estrictos de la región. La mayor riqueza se registra para Durango (4,954 especies, 58 % del total). La Sierra Madre Occidental (en su porción para la zona estudiada) es la ecorregión con más especies (3,565), seguida por la Sierra Madre Oriental (2,862) y el Desierto Chihuahuense (2,602). Chihuahua y la Sierra Madre Occidental son el estado y la ecorregión menos explorados, mientras que la ecorregión mejor explorada es el Desierto Chihuahuense.  Conclusiones:  Las cifras de riqueza y endemismo presentadas reflejan el estado del conocimiento actual, sin embargo, se requiere incrementar los inventarios florísticos, las revisiones taxonómicas y los estudios ecológicos para contar con información más precisa y exacta del panorama real.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background:  The taxonomic and floristic knowledge of vascular plants in northern Mexico presents relevant, though disaggregated advances. Therefore, it is crucial to make a diagnostic in order to define strategies to unify and complement the knowledge generated.  Questions:  how many species of vascular plants are there in northern Mexico? How many of these are restricted to this region? Which are the areas where main exploration efforts should be concentrated?  Study site:  northern Mexico (states of Chihuahua, Coahuila, Durango and Nuevo Léon).  Methods:  A database of vascular plants from northern Mexico was developed from the database of the CIIDIR Herbarium adding records gattered at the Universities of Chihuahua, Antonio Narro, and Nuevo Leon, as well as with data from taxonomic reviews and from herbaria (ANSM, CFNL, CIIDIR, FZ-UACH). From the report generated, richness and endemism per state and ecoregion were calculated. The best known groups and geographic areas were identified, as well as knowledge gaps; a list of the herbaria, programmes in botany and botanists in the region was compiled.  Results:  8,503 species, 1,599 genera and 210 families of vascular plants were retrieved by the revision. 15 genera are strict endemics to the region. Durango is the richest state (4,954 species, 58 % of the total). Sierra Madre Occidental is the ecoregion with the higher richness (3,565 species, considering only its portion in the studied states), followed by Sierra Madre Oriental (2,862) and Chihuahuan Desert (2,602). The better known state and ecoregion are Chihuahua and Sierra Madre Occidental. Chihuahuan Desert is the region better explored.  Conclusions:  the magnitude of the richness and endemism presented here reflects the current knowledge, nonetheless, it is necessary to increase floristic inventaries, taxonomic revision and ecological studies to acquire more precise and exact information of the real scene.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Chihuahua]]></kwd>
<kwd lng="es"><![CDATA[Coahuila]]></kwd>
<kwd lng="es"><![CDATA[Durango]]></kwd>
<kwd lng="es"><![CDATA[flora]]></kwd>
<kwd lng="es"><![CDATA[Nuevo León]]></kwd>
<kwd lng="en"><![CDATA[Chihuahua]]></kwd>
<kwd lng="en"><![CDATA[Coahuila]]></kwd>
<kwd lng="en"><![CDATA[Durango]]></kwd>
<kwd lng="en"><![CDATA[flora]]></kwd>
<kwd lng="en"><![CDATA[Nuevo León]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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