Abstract
A new species from the cloud forest in the state of Guerrero, Mexico, is described and illustrated: Cestrum lozadai. This new entity is similar to C. laxum; however, it is distinguished from the latter by presenting narrower leaf blades, with up to 15 pairs of secondary veins, flowers with longer pedicels, up to 16 mm and articulated, the corolla tube longer, up to 21 mm and internally with retrorse trichomes in the portion attached to the filaments, with the fused part of the filaments up to 15 mm, and with a known distribution only in the state of Guerrero, Mexico.
References
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Bentham, G. (1839) <em>Plantas Hartwegianas imprimis Mexicanas</em>. Londini, pp. 23‒24.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cuevas, R. & Montero, J. (2011) Nuevo registro de <em>Cestrum mortionanum </em>(Solanaceae) y descripción de una variedad en la vertiente pacífica de México. <em>Acta Botanica Mexicana</em> 95: 37‒43. https://doi.org/10.21829/abm95.2011.265</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cuevas-Arias, C., Vargas, O. & Rodríguez, A. (2008) Diversidad de la familia Solanaceae en el estado de Jalisco, México. <em>Revista Mexicana de Biodiversidad </em>79 (1): 67‒79. https://doi.org/10.22201/ib.20078706e.2008.001.533</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Jussieu, A.L. de (1789) <em>Genera Plantarum </em>124. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">IUCN (2021) <em>The IUCN red list of threatened species</em>, version 2010. 4. IUCN Red List Unit, Cambridge U.K. Available from: http://www.iucnredlist.org/ (accessed 4 December 2021).</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. von. (1753a) <em>Species Plantarum</em> 1: 184.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. von. (1753b) <em>Species Plantarum</em> 1: 182.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. von. (1753c)<em> Species Plantarum</em> 1: 191.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Martínez, M., Vargas-Ponce, O., Rodríguez, A., Chiang, F. & Ocegueda, S. (2017) Solanaceae family in Mexico. <em>Botanical Sciences</em> 95 (1): 131‒145. https://doi.org/10.17129/botsci.658</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Monro, A. (2012) Eight new species of <em>Cestrum</em> (Solanaceae) from Mesoamerica. <em>Phytokeys</em> 8: 49‒82. https://doi.org/10.3897/phytokeys.8.2238</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Montero-Castro, J. (2011)<em> Cestrum sotonunezii</em>, a New Species of Solanaceae from Central Mexico. <em>Novon</em> 21 (2): 244‒248. https://doi.org/10.3417/2005040</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Montero-Castro, J. (2018) <em>Cestrum chiangi</em> (Solanaceae), una especie nueva de Guerrero y Oaxaca, México. <em>Acta Botanica Mexicana</em> 124: 219‒224. https://doi.org/10.21829/abm124.2018.1376</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Montero-Castro, J. (2020) <em>Cestrum</em>. <em>In</em>: Rzedowski, J. & Hernández Ledesma, P. (eds.) <em>Flora del Bajío y de regiones adyacentes </em>218. Instituto de Ecología A.C. Centro Regional del Bajío, Pátzcuaro, Michoacán, México. 225 pp. [pp. 33‒63]</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Montero-Castro, J., Delgado ̵ Salinas, A., Luna, E. de & Eguiarte ̵ Fruns, L. (2006) Phylogenetic Analysis of <em>Cestrum</em> Section <em>Habrothamnus</em> (Solanaceae) Based on Plastid and Nuclear DNA Sequences. <em>Systematic Botany</em> 31 (4): 843–850. https://doi.org/10.1600/036364406779695979</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Nee, M. (1986) Solanaceae I. <em>In</em>: Gómez-pompa, A. & Moreno, N.P. (eds.) <em>Flora de Veracruz. </em>Vol. 49. Instituto Nacional de Investigaciones sobre Recursos Bióticos. 192 pp.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Von Schlechtendal, D.F.L. (1847) <em>Linnaea</em> 19: 260.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cuevas, R. & Montero, J. (2011) Nuevo registro de <em>Cestrum mortionanum </em>(Solanaceae) y descripción de una variedad en la vertiente pacífica de México. <em>Acta Botanica Mexicana</em> 95: 37‒43. https://doi.org/10.21829/abm95.2011.265</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cuevas-Arias, C., Vargas, O. & Rodríguez, A. (2008) Diversidad de la familia Solanaceae en el estado de Jalisco, México. <em>Revista Mexicana de Biodiversidad </em>79 (1): 67‒79. https://doi.org/10.22201/ib.20078706e.2008.001.533</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Jussieu, A.L. de (1789) <em>Genera Plantarum </em>124. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">IUCN (2021) <em>The IUCN red list of threatened species</em>, version 2010. 4. IUCN Red List Unit, Cambridge U.K. Available from: http://www.iucnredlist.org/ (accessed 4 December 2021).</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. von. (1753a) <em>Species Plantarum</em> 1: 184.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. von. (1753b) <em>Species Plantarum</em> 1: 182.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. von. (1753c)<em> Species Plantarum</em> 1: 191.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Martínez, M., Vargas-Ponce, O., Rodríguez, A., Chiang, F. & Ocegueda, S. (2017) Solanaceae family in Mexico. <em>Botanical Sciences</em> 95 (1): 131‒145. https://doi.org/10.17129/botsci.658</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Monro, A. (2012) Eight new species of <em>Cestrum</em> (Solanaceae) from Mesoamerica. <em>Phytokeys</em> 8: 49‒82. https://doi.org/10.3897/phytokeys.8.2238</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Montero-Castro, J. (2011)<em> Cestrum sotonunezii</em>, a New Species of Solanaceae from Central Mexico. <em>Novon</em> 21 (2): 244‒248. https://doi.org/10.3417/2005040</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Montero-Castro, J. (2018) <em>Cestrum chiangi</em> (Solanaceae), una especie nueva de Guerrero y Oaxaca, México. <em>Acta Botanica Mexicana</em> 124: 219‒224. https://doi.org/10.21829/abm124.2018.1376</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Montero-Castro, J. (2020) <em>Cestrum</em>. <em>In</em>: Rzedowski, J. & Hernández Ledesma, P. (eds.) <em>Flora del Bajío y de regiones adyacentes </em>218. Instituto de Ecología A.C. Centro Regional del Bajío, Pátzcuaro, Michoacán, México. 225 pp. [pp. 33‒63]</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Montero-Castro, J., Delgado ̵ Salinas, A., Luna, E. de & Eguiarte ̵ Fruns, L. (2006) Phylogenetic Analysis of <em>Cestrum</em> Section <em>Habrothamnus</em> (Solanaceae) Based on Plastid and Nuclear DNA Sequences. <em>Systematic Botany</em> 31 (4): 843–850. https://doi.org/10.1600/036364406779695979</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Nee, M. (1986) Solanaceae I. <em>In</em>: Gómez-pompa, A. & Moreno, N.P. (eds.) <em>Flora de Veracruz. </em>Vol. 49. Instituto Nacional de Investigaciones sobre Recursos Bióticos. 192 pp.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Von Schlechtendal, D.F.L. (1847) <em>Linnaea</em> 19: 260.</span></span></span></p>