<?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>1870-3453</journal-id>
<journal-title><![CDATA[Revista mexicana de biodiversidad]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Biodiv.]]></abbrev-journal-title>
<issn>1870-3453</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Biología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-34532024000100415</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2024.95.5471</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Tetramerium (Acanthaceae) in the Depresión del Balsas Biogeographic Province of Mexico, two new species and a new combination]]></article-title>
<article-title xml:lang="es"><![CDATA[Tetramerium (Acanthaceae) en la provincia biogeográfica Depresión del Balsas de México, dos especies nuevas y una combinación nueva]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Daniel]]></surname>
<given-names><![CDATA[Thomas F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,California Academy of Sciences Department of Botany ]]></institution>
<addr-line><![CDATA[San Francisco California]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>95</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532024000100415&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532024000100415&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532024000100415&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract A taxonomic account of Tetramerium in the Depresión del Balsas Biogeographic Province of western and central Mexico reveals 14 species there, with 2 of them, T. cruzii and T. michoacanum, described herein. A new combination, T. barlerioides, is proposed for the species previously known as T. ochoterenae. This region of Mexico appears to be the center of both species richness and morphological diversity for this widely distributed American genus. A key to the 14 species is followed by geographic distribution ranges, ecological data within the region, and miscellaneous notes for each one that updates information from the last monograph of the genus. A verified voucher specimen is provided to document species occurrences in each state (or portion of a state) in the Depresión del Balsas. Occurrences of 2 species, T. glandulosum and T. tenuissimum, are newly reported from the Estado de México. A map of the region and floral photographs of 12 of the species are provided.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Un tratamiento taxonómico de Tetramerium en la provincia biogeográfica de la Depresión del Balsas en el oeste y centro de México revela la presencia de 14 especies; 2 de ellas, T. cruzii y T. michoacanum, descritas aquí. Se formaliza una nueva combinación, T. barlerioides para la especie anteriormente conocida como T. ochoterenae. Esta región de México parece ser tanto el centro de riqueza de especies, como de diversidad morfológica de este género americano de amplia distribución. A la clave para las 14 especies le siguen rangos de distribución geográfica, datos ecológicos dentro de la región y notas diversas para cada una, que actualiza la información de la última monografía del género. Se proporciona un espécimen para documentar la presencia de las especies en cada estado (o parte de un estado) en la Depresión del Balsas. Se reporta por primera vez la presencia de 2 especies, T. glandulosum y T. tenuissimum en el Estado de México. Se presenta un mapa de la región y fotografías florales de 12 de las especies.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Taxonomy]]></kwd>
<kwd lng="en"><![CDATA[Floristics]]></kwd>
<kwd lng="en"><![CDATA[Morphology]]></kwd>
<kwd lng="en"><![CDATA[Distribution]]></kwd>
<kwd lng="en"><![CDATA[Endemism]]></kwd>
<kwd lng="en"><![CDATA[Pollen]]></kwd>
<kwd lng="es"><![CDATA[Taxonomía]]></kwd>
<kwd lng="es"><![CDATA[Florística]]></kwd>
<kwd lng="es"><![CDATA[Morfología]]></kwd>
<kwd lng="es"><![CDATA[Distribución]]></kwd>
<kwd lng="es"><![CDATA[Endemismo]]></kwd>
<kwd lng="es"><![CDATA[Polen]]></kwd>
</kwd-group>
</article-meta>
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