<?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>S0187-71512023000100207</article-id>
<article-id pub-id-type="doi">10.21829/abm130.2023.2233</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Una nueva especie de Acanthocereus (Cactaceae) de Honduras]]></article-title>
<article-title xml:lang="en"><![CDATA[A new species of Acanthocereus (Cactaceae) from Honduras]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vega]]></surname>
<given-names><![CDATA[Hermes Leonel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oyuela]]></surname>
<given-names><![CDATA[Olvin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alemán]]></surname>
<given-names><![CDATA[Maryury]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Hinostrosa]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Héctor M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Mancomunidad de Municipios del Parque Nacional Montaña de Celaque  ]]></institution>
<addr-line><![CDATA[Gracias Lempira]]></addr-line>
<country>Honduras</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de Honduras Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[ Tegucigalpa]]></addr-line>
<country>Honduras</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Sistema Nacional de Áreas Protegidas de Honduras  ]]></institution>
<addr-line><![CDATA[Gracias Lempira]]></addr-line>
<country>Honduras</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Biología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<numero>130</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-71512023000100207&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512023000100207&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512023000100207&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes y Objetivos:  Durante exploraciones en las inmediaciones del Parque Nacional Montaña de Celaque, Honduras, se descubrió una especie nueva de Acanthocereus (Cactaceae). El objetivo del presente trabajo es describir e ilustrar a Acanthocereus lempirensis y compararla con A. chiapensis, su supuesto pariente más cercano.  Métodos: Se realizaron colectas botánicas durante 2023. Se revisó material en diversos herbarios y una Base de Datos de Cactáceas de Norte y Centroamérica para hacer un análisis comparativo con otras especies del género, y se elaboró un mapa de distribución. Se evaluó el estado de conservación de la especie, según los criterios de la Lista Roja de la UICN.  Resultados clave: Acanthocereus lempirensis parece estar íntimamente relacionada con A. chiapensis por la presencia en ambas especies de tallos verde glauco, ramificados desde la base, con una espinación similar, y flores nocturnas. Se distingue de esta especie fácilmente por la combinación de los siguientes caracteres morfológicos: segmentos del perianto rosas, con segmentos internos oblanceolados, con ápices redondeados a retusos, en su mayoría subagudos y los márgenes del ápice diminutamente lacerados. La especie se encuentra restringida a una pequeña área de acantilados calizos y laderas muy inclinadas con bosque tropical caducifolio con Quercus y Pinus. Únicamente se han detectado ca. de 150 individuos en estado silvestre. Se sugiere una categoría de conservación En Peligro Crítico (CR) para esta especie.  Conclusiones: Este descubrimiento destaca a Honduras como un importante centro de diversidad de especies de Acanthocereus (cinco spp.), después de México (12 spp.). Los recientes hallazgos botánicos en Honduras (A. canoensis y A. lempirensis) confirman la importancia de continuar y fomentar los estudios florísticos y la conservación de sus ecosistemas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background and Aims:  During explorations in the Parque Nacional Montaña de Celaque, Honduras, a new species of Acanthocereus (Cactaceae) was discovered. The aim of the present study is to describe and illustrate A. lempirensis, and to compare it with its putatively closest relative, A. chiapensis.  Methods: Botanical field collections were conducted during 2023. In order to compare the possible new species with other species in the genus, the collections in different herbaria and a Database of Cactaceae from North and Central America were examined and a distribution map was prepared. A preliminary assessment of the conservation status of the new species was preliminarily assessed using the IUCN Red List criteria.  Key results: Acanthocereus lempirensis appears to be closely related to A. chiapensis by the presence in both species of green glaucous stems ramified from the base, similar spination, and nocturnal flowers. It can easily be distinguished from that species by the combination of the following morphological characters: pink perianth segments, internal perianth segments oblanceolate, rounded to retuse and mostly subacute apically, and the apical margins minutely lacerate. The species is restricted to a small area of limestone cliffs and steep slopes with tropical deciduous forests intermixed with Pinus and Quercus. Only ca. 150 individuals have been detected in the wild. A Critically Endangered (CR) conservation category is suggested for this species.  Conclusion: This new discovery places Honduras as an important diversity center for species of Acanthocereus (five spp.), preceded by Mexico (12 spp.). The recent botanical findings in Honduras (A. canoensis y A. lempirensis) confirm the importance of continuing and supporting floristic studies in the country and the conservation it its ecosystems.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Acanthocereus canoensis]]></kwd>
<kwd lng="es"><![CDATA[Acanthocereus chiapensis]]></kwd>
<kwd lng="es"><![CDATA[Acanthocereus lempirensis]]></kwd>
<kwd lng="es"><![CDATA[Colohete]]></kwd>
<kwd lng="es"><![CDATA[endémica]]></kwd>
<kwd lng="es"><![CDATA[Lempira]]></kwd>
<kwd lng="en"><![CDATA[Acanthocereus canoensis]]></kwd>
<kwd lng="en"><![CDATA[Acanthocereus chiapensis]]></kwd>
<kwd lng="en"><![CDATA[Acanthocereus lempirensis]]></kwd>
<kwd lng="en"><![CDATA[Colohete]]></kwd>
<kwd lng="en"><![CDATA[endemic]]></kwd>
<kwd lng="en"><![CDATA[Lempira]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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