<?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>S2007-42982025000100261</article-id>
<article-id pub-id-type="doi">10.17129/botsci.3593</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Jatropha marquezii (Euphorbiaceae), especie nueva, recuento de las especies de Jatropha en Sinaloa, México, y notas sobre J. purpurea]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pío-León]]></surname>
<given-names><![CDATA[Juan Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salomón-Montijo]]></surname>
<given-names><![CDATA[Bladimir]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Millán-Otero]]></surname>
<given-names><![CDATA[Manuel Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[José Saturnino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional ]]></institution>
<addr-line><![CDATA[ Durango]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Sinaloa Facultad de Biología ]]></institution>
<addr-line><![CDATA[Culiacán Sinaloa]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidades para el Bienestar Benito Juárez García  ]]></institution>
<addr-line><![CDATA[Cosalá Sinaloa]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2025</year>
</pub-date>
<volume>103</volume>
<numero>1</numero>
<fpage>261</fpage>
<lpage>271</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982025000100261&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982025000100261&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982025000100261&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes: Mediante exploraciones en el centro-sur de Sinaloa y revisión en iNaturalistMX se detectaron ejemplares de una Jatropha arbustiva con hojas 3-5 lobadas que no correspondía con las especies conocidas.  Preguntas: ¿Son las poblaciones de Jatropha del centro-sur de Sinaloa una especie nueva? ¿Cuántas y cuáles son las especies de Jatropha presentes en Sinaloa, México?  Especies de estudio: Jatropha.  Sitio y años de estudio:  Sinaloa, México; 2021-2024.  Métodos: Colectas botánicas y fotografías en campo de Jatropha sp. nov. y J. purpurea. Revisión de literatura, ejemplares de herbario y iNaturalistMX. Láminas comparativas, mapas de distribución y una clave de identificación de las especies arbustivas de Jatropha con hojas 3-5 lobadas en el occidente y noroeste de México.  Resultados: Jatropha marquezii es una especie nueva endémica de Sinaloa. Es similar en habito a J. purpurea, pero se diferencia por su corola verde-amarillenta con tricomas largos en la parte interna, con lóbulos conspicuamente reflexos y prácticamente sin glándulas estipitadas. De Jatropha bullockii se diferencia por sus estambres uniseriados y corola cupulada. Se contabilizaron 14 especies de Jatropha para Sinaloa, de las cuales Jatropha marquezii es la de menor área de distribución (&lt; 30 km2) y J. purpurea la de hábitat mayormente amenazado.  Conclusiones: Jatropha marquezii sp. nov. se parece a J. purpurea y las especies de la sección Fremontioides. Se recomienda incluir a J. marquezii y J. purpurea en la categoría En Peligro de la Lista Roja de la UICN.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Through explorations in south-central Sinaloa and review of iNaturalistMX, specimens were detected of a shrubby Jatropha with 3-5-lobed leaves that did not correspond to any known species.  Questions: Are the Jatropha populations of south-central Sinaloa a new species? How many and which species of Jatropha are present in Sinaloa, Mexico?  Studied species: Jatropha.  Study site and dates: Sinaloa, Mexico, 2021-2024.  Methods: Botanical collections and field photographs of Jatropha sp. nov. and J. purpurea were made. Specialized literature, herbarium specimens, and iNaturalistMX were consulted. Comparative plates, distribution maps, and identification keys of the shrubby, 3-5-lobed leafed Jatropha species in western and northwestern Mexico were prepared.  Results: Jatropha marquezii is a new endemic species from Sinaloa. It is similar in habit to J. purpurea but differs in its yellowish-green corolla with long trichomes on the inner surface, conspicuously reflexed lobes, and practically no stipitate glands. It differs from J. bullockii by its uniseriate stamens and cupulate corolla. Fourteen species of Jatropha were documented for Sinaloa, of which Jatropha marquezii has the smallest range (&lt; 30 km2) and J. purpurea occurs in the most threatened habitat.  Conclusions: Jatropha marquezii sp. nov. is similar to J. purpurea and species of section Fremontioides. It is recommended that J. marquezii and J. purpurea be included as Endangered in the IUCN Redlist.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ecosistemas fragmentados]]></kwd>
<kwd lng="es"><![CDATA[Jatropha bullockii]]></kwd>
<kwd lng="es"><![CDATA[Jatropha cardiophylla]]></kwd>
<kwd lng="es"><![CDATA[Jatropha moranii]]></kwd>
<kwd lng="es"><![CDATA[Meseta de Cacaxtla]]></kwd>
<kwd lng="en"><![CDATA[Fragmented ecosystems]]></kwd>
<kwd lng="en"><![CDATA[Jatropha bullockii]]></kwd>
<kwd lng="en"><![CDATA[Jatropha cardiophylla]]></kwd>
<kwd lng="en"><![CDATA[Jatropha moranii]]></kwd>
<kwd lng="en"><![CDATA[Meseta de Cacaxtla]]></kwd>
</kwd-group>
</article-meta>
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