<?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>S2007-42982026000300917</article-id>
<article-id pub-id-type="doi">10.17129/botsci.3889</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Una nueva especie de Guadua de la región Noroccidental Andina de Perú (Poaceae: Bambusoideae: Guaduinae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Londoño]]></surname>
<given-names><![CDATA[Ximena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Sanchez]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Sociedad Colombiana del Bambú  ]]></institution>
<addr-line><![CDATA[Quindío ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Guadalajara Centro Universitario de Ciencias Biológicas y Agropecuarias Departamento de Botánica y Zoología]]></institution>
<addr-line><![CDATA[Zapopan Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Guadalajara Instituto de Botánica Laboratorio Nacional de Identificación y Caracterización Vegetal]]></institution>
<addr-line><![CDATA[Zapopan Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2026</year>
</pub-date>
<volume>104</volume>
<numero>3</numero>
<fpage>917</fpage>
<lpage>927</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982026000300917&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982026000300917&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982026000300917&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: Guadua angustifolia Biotipo 1 es una especie cultivada en la región Noroccidental y con poblaciones silvestres en la región Nororiental de Perú. Un análisis filogenético reciente con marcadores moleculares del núcleo (SNPs) encontró que G. takahashiae es la especie hermana a G. aff. angustifolia Biotipo 1. Morfológicamente esta especie es similar a G. angustifolia, G. lynnclarkiae y G. takahashiae, pero presenta caracteres que la separan de ellas.  Pregunta:  ¿Las poblaciones conocidas como G. aff. angustifolia Biotipo 1 representan una especie nueva?  Especies de estudio: Guadua, Guadua paucarii.  Sitio y años de estudio:  Región Nororiental y Noroccidental, Perú, mayo 2010, junio 2024.  Métodos:  Realizamos observaciones de campo y recolectamos muestras de herbario, medimos caracteres morfológicos vegetativos y reproductivos y evaluamos el estado de conservación de Guadua aff. angustifolia Biotipo 1.  Resultados:  Los individuos y poblaciones de Guadua aff. angustifolia Biotipo 1 se diferenciaron de G. angustifolia, G. lynnclarkiae y G. takahashiae por presentar un porte más pequeño, bandas supranodales ligeramente más anchas, menor espesor de la pared del culmo, y más espinas por nudo. Por los caracteres anteriores describimos a Guadua paucarii y planteamos la hipótesis de que dicha especie estará En Peligro, de acuerdo con los criterios de la IUCN.  Conclusiones: Guadua paucarii es una especie nueva, endémica y en peligro de Perú, que es diferente morfológica y genéticamente a sus congéneres.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Guadua aff. angustifolia Biotype 1 is a species cultivated in the Northwestern region and with wild populations in the Northeastern region of Peru. A recent phylogenetic analysis using nuclear molecular markers (SNPs) found that G. takahashiae is the sister species to G. aff. angustifolia Biotype 1. Morphologically, this species is similar to G. angustifolia, G. lynnclarkiae, and G. takahashiae, but possess characters that distinguish it from them.  Question: Do the populations known as G. aff. angustifolia Biotype 1 represent a new species?  Study species: Guadua, Guadua paucarii.  Study site and years: Northeastern and Northwestern regions, Peru, May 2010 and June 2024.  Methods: We conducted field observations and collected herbarium specimens, measured vegetative and reproductive morphological characters, and assessed conservation status.  Results:  Individuals and populations of Guadua aff. angustifolia Biotype 1 were differentiated from G. angustifolia, G. lynnclarkiae, and G. takahashiae by having a smaller stature, slightly wider supranodal bands, thinner culm walls, and more spines per node. Based on the aforementioned characters, we describe Guadua paucarii as a new species and propose the hypothesis that this species should be categorized as Endangered.  Conclusions: Guadua paucarii is a new, endangered species, endemic to Peru and morphological and genetically distinct from its congeners.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Bandas infra y supra nodales]]></kwd>
<kwd lng="es"><![CDATA[endemismo]]></kwd>
<kwd lng="es"><![CDATA[espinas nodales]]></kwd>
<kwd lng="es"><![CDATA[Guadua angustifolia]]></kwd>
<kwd lng="es"><![CDATA[Noroccidente peruano]]></kwd>
<kwd lng="en"><![CDATA[Endemism]]></kwd>
<kwd lng="en"><![CDATA[Guadua angustifolia]]></kwd>
<kwd lng="en"><![CDATA[infra- and supranodal bands]]></kwd>
<kwd lng="en"><![CDATA[nodal thorns]]></kwd>
<kwd lng="en"><![CDATA[Peruvian Northwest]]></kwd>
</kwd-group>
</article-meta>
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