Abstract
Passiflora zapalinamensis, a new species of the northern Mexican flora with uncinate trichomes, is herein described and illustrated. This species is endemic to the canyons and hills of the Sierra de Zapalinamé within the state of Coahuila, and the extended Sierra Madre Oriental of northeastern Mexico. It belongs to the subgenus Decaloba, supersection Bryonioides. It can be readily distinguished from its most morphologically similar species Passiflora hispidula by its subopposite to alternate glabrous nectaries, consistently rounded foliar apices, red stems and secluded distribution. Its taxonomy, ecology and conservation are discussed.
References
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Anonymous (1996) <em>Decreto del área natural protegida, con carácter de Zona Sujeta a Conservación Ecológica, un área de la serranía conocida como Zapalinamé. </em>Periódico Oficial del Estado, Tomo CIII, No. 83, pp. 69–75. [Saltillo, Coahuila]</span></span></span></p>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Encina-Domínguez, J.A., Estrada-Castillón, E., Villarreal-Quintanilla, J.A., Villaseñor, J.L., Cantú-Ayala, C.M. & Arévalo, J.R. (2016) Floristic richness of the Sierra de Zapalinamé, Coahuila, Mexico. <em>Phytotaxa </em>283: 1–42. https://doi.org/10.11646/phytotaxa.283.1.1</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Encina-Domínguez, J.A., Villarreal-Quintanilla, J.A., Estrada-Castillón, E. & Rueda-Moreno, O. (2019) Situación actual de la vegetación de la Sierra de Zapalinamé, Coahuila, México. <em>Botanical Sciences</em> 97: 630–648. https://doi.org/10.17129/botsci.2213</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">ESRI (2011) ArcGIS Desktop: Release 10. Environmental Systems Research Institute. Redlands, CA, USA.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Feuillet, C. & MacDougal, J.M. 2003 [2004]. A new infrageneric classification of <em>Passiflora</em> L. (Passifloraceae). <em>Passiflora</em> 13: 34–38. https://doi.org/10.2307/3393379</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 (2017) Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Subcommittee. Available from: http://cmsdocs.s3.amazonaws.com/ RedListGuidelines.pdf (consulted September 2019).</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Killip, E.P. (1938) <em>The American species of Passifloraceae.</em> Publication (Field Museum of Natural History : 1909). pp. 407–408. https://doi.org/10.5962/bhl.title.2269</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Krosnick, S.E., Porter-Utley, K.E., MacDougal, J.M., Jørgensen, P.M. & McDade, L.A. (2013) New insights into the evolution of <em>Passiflora</em> subgenus <em>Decaloba</em> (Passifloraceae): phylogenetic relationships and morphological synapomorphies. <em>Systematic Botany</em> 38 (3): 692–713. https://doi.org/10.1600/036364413X670359</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kuethe, J.R. (2020) <em>Passiflora</em> - List of recognized species – 2020. ResearchGate.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lozada-Pérez, L.U.C.I.O. & Gutiérrez, J.F.R. (2016) A new species of <em>Passiflora</em> L. (<em>Passifloraceae</em>) from Guerrero and Oaxaca, México. <em>Phytotaxa</em> 263 (3): 297–300. https://doi.org/10.11646/phytotaxa.263.3.11</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">MacDougal, J.M. (1994) Revision of <em>Passiflora</em> subgenus <em>Decaloba</em> section <em>Pseudodysosmia</em> (Passifloraceae). <em>Systematic Botany Monographs </em>10: 1–146. https://doi.org/10.2307/25027834</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">MacDougal, J.M. (2001) <em>Passifloraceae</em> Passionflower Family. Journal of the Arizona-Nevada Academy of Science, pp. 41–45.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">SPP. Secretaría de Programación y Presupuesto. (1983) <em>Síntesis geográfica de Coahuila. Dirección General de Geografía e Informática.</em> México, D.F., 163 pp.</span></span></span></p>
<p><span style="font-size: small;">Thiers, B. (2020 onward) Index Herbariorum. A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/science/ih (accessed 29 August 2022)</span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Bachman, S., Moat, J., Hill, A.W., de la Torre, J. & Scott, B. (2011) Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool, Version BETA. e-Infrastructures for data publishing in biodiversity science. <em>ZooKeys</em> 150: 117–126. https://doi.org/10.3897/zookeys.150.2109</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Boender, R. (2018) Passionflowers, a pictorial guide. Edited by J.M. MacDougal and contributed by R.J.R. Vanderplank. Independently published (14 Jan. 2019).</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Candolle, A.P.D. (1822) Mémoire sur la tribu des Cuspariées.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Encina-Domínguez, J.A., Estrada-Castillón, E., Villarreal-Quintanilla, J.A., Villaseñor, J.L., Cantú-Ayala, C.M. & Arévalo, J.R. (2016) Floristic richness of the Sierra de Zapalinamé, Coahuila, Mexico. <em>Phytotaxa </em>283: 1–42. https://doi.org/10.11646/phytotaxa.283.1.1</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Encina-Domínguez, J.A., Villarreal-Quintanilla, J.A., Estrada-Castillón, E. & Rueda-Moreno, O. (2019) Situación actual de la vegetación de la Sierra de Zapalinamé, Coahuila, México. <em>Botanical Sciences</em> 97: 630–648. https://doi.org/10.17129/botsci.2213</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">ESRI (2011) ArcGIS Desktop: Release 10. Environmental Systems Research Institute. Redlands, CA, USA.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Feuillet, C. & MacDougal, J.M. 2003 [2004]. A new infrageneric classification of <em>Passiflora</em> L. (Passifloraceae). <em>Passiflora</em> 13: 34–38. https://doi.org/10.2307/3393379</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 (2017) Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Subcommittee. Available from: http://cmsdocs.s3.amazonaws.com/ RedListGuidelines.pdf (consulted September 2019).</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Killip, E.P. (1938) <em>The American species of Passifloraceae.</em> Publication (Field Museum of Natural History : 1909). pp. 407–408. https://doi.org/10.5962/bhl.title.2269</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Krosnick, S.E., Porter-Utley, K.E., MacDougal, J.M., Jørgensen, P.M. & McDade, L.A. (2013) New insights into the evolution of <em>Passiflora</em> subgenus <em>Decaloba</em> (Passifloraceae): phylogenetic relationships and morphological synapomorphies. <em>Systematic Botany</em> 38 (3): 692–713. https://doi.org/10.1600/036364413X670359</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kuethe, J.R. (2020) <em>Passiflora</em> - List of recognized species – 2020. ResearchGate.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lozada-Pérez, L.U.C.I.O. & Gutiérrez, J.F.R. (2016) A new species of <em>Passiflora</em> L. (<em>Passifloraceae</em>) from Guerrero and Oaxaca, México. <em>Phytotaxa</em> 263 (3): 297–300. https://doi.org/10.11646/phytotaxa.263.3.11</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">MacDougal, J.M. (1994) Revision of <em>Passiflora</em> subgenus <em>Decaloba</em> section <em>Pseudodysosmia</em> (Passifloraceae). <em>Systematic Botany Monographs </em>10: 1–146. https://doi.org/10.2307/25027834</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">MacDougal, J.M. (2001) <em>Passifloraceae</em> Passionflower Family. Journal of the Arizona-Nevada Academy of Science, pp. 41–45.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">SPP. Secretaría de Programación y Presupuesto. (1983) <em>Síntesis geográfica de Coahuila. Dirección General de Geografía e Informática.</em> México, D.F., 163 pp.</span></span></span></p>
<p><span style="font-size: small;">Thiers, B. (2020 onward) Index Herbariorum. A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/science/ih (accessed 29 August 2022)</span></p>