<?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>1409-3871</journal-id>
<journal-title><![CDATA[Lankesteriana]]></journal-title>
<abbrev-journal-title><![CDATA[Lankesteriana]]></abbrev-journal-title>
<issn>1409-3871</issn>
<publisher>
<publisher-name><![CDATA[Lankester Botanical Garden, University of Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1409-38712023000200139</article-id>
<article-id pub-id-type="doi">10.15517/lank.v23i2.54019</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Masdevallia leonor-baeziana (Pleurothallidinae): a new species from the Andean-Amazonian foothills of Caquetá, Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perdomo]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trujillo Trujillo]]></surname>
<given-names><![CDATA[Edwin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Karremans]]></surname>
<given-names><![CDATA[Adam P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal do Rio Grande do Sul Postgraduate Program in Botany Laboratory of Systematics of Vascular Plants]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de la Amazonia Laboratorio de Agrobiodiversidad y Malherbología - LAMUA ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Costa Rica Jardín Botánico Lankester ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Evolutionary Ecology Group Naturalis Biodiversity Center ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>The Netherlands</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>23</volume>
<numero>2</numero>
<fpage>139</fpage>
<lpage>144</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-38712023000200139&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-38712023000200139&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-38712023000200139&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract We describe and illustrate a new species of Masdevallia from the Andean-Amazonian foothills of Caquetá, Colombia. Masdevallia leonor-baeziana belongs to Masdevallia subsect. Saltatrices, within to the M. constricta group. It is most similar to M. constricta, but it can be distinguished by the shorter sepals and sepaline tails that do not surpass the tube length, and the shorter, sigmoid-ovate lip. We proposed categorizing the species as Critically Endangered (CR) based on the B and D IUCN red list criteria.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Describimos e ilustramos una nueva especie de Masdevallia del piedemonte Andino-Amazónico de Caquetá, Colombia. Masdevallia leonor-baeziana pertenece a Masdevallia subsecc. Saltatrices, dentro del grupo M. constricta. Es similar a M. constricta, pero puede diferenciarse por los sépalos y colas sepalinas más cortos que no sobrepasan el largo del tubo, y el labelo más corto, sigmoide-ovado. Proponemos la categorización de la especie como Críticamente Amenazada (CR) siguiendo los criterios B y D de la lista roja de la IUCN.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Amazonia]]></kwd>
<kwd lng="en"><![CDATA[Andes]]></kwd>
<kwd lng="en"><![CDATA[biodiversity]]></kwd>
<kwd lng="en"><![CDATA[foothills]]></kwd>
<kwd lng="en"><![CDATA[neotropics.]]></kwd>
<kwd lng="es"><![CDATA[Amazonia]]></kwd>
<kwd lng="es"><![CDATA[Andes]]></kwd>
<kwd lng="es"><![CDATA[biodiversidad]]></kwd>
<kwd lng="es"><![CDATA[neotrópicos]]></kwd>
<kwd lng="es"><![CDATA[piedemonte]]></kwd>
</kwd-group>
</article-meta>
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