Pachyphytum confusum (Crassulaceae), a new species from the southwest of the state of Guanajuato, Mexico
Background and Aims: Pachyphytum (Crassulaceae) is a genus endemic to central Mexico, consisting of hanging and succulent plants that grow on cliffs and slopes. The taxonomic information of Pachyphytum is included in general works on Crassulaceae and a series of articles describing new species. At a...
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| Formaat: | Online |
| Taal: | spa |
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Instituto de Ecología, A.C.
2018
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| Online toegang: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1401 |
| _version_ | 1799771344536076288 |
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| author | Pérez-Calix, Emmanuel Guadián-Marín, Jesús Israel García-Ruiz, Ignacio |
| author_facet | Pérez-Calix, Emmanuel Guadián-Marín, Jesús Israel García-Ruiz, Ignacio |
| author_sort | Pérez-Calix, Emmanuel |
| collection | ABM |
| description | Background and Aims: Pachyphytum (Crassulaceae) is a genus endemic to central Mexico, consisting of hanging and succulent plants that grow on cliffs and slopes. The taxonomic information of Pachyphytum is included in general works on Crassulaceae and a series of articles describing new species. At a regional level, it is included in the treatment of the family Crassulaceae for the Flora del Bajío y de regiones adyacentes. The aim of this work is to name and describe a new species of Pachyphytum based on plants collected in the southeast of the state of Guanajuato.Methods: Excursions were realized to one of the localities in the Sierra de Pénjamo from where the plant was registered, as well as to the type locality of Pachyphytum machucae. Descriptions of the collected plants and a comparative table were prepared, and the literature was searched for morphologically similar species. Key results: Pachyphytum confusum is proposed as a species new to science and is compared with P. machucae and P. glutinicaule which it resembles morphologically. The conservation status of Vulnerable (VU) is assigned.Conclusions: Despite the fact that Pachyphytum consists of 21 especies, it is difficult to interprete their relationships; in its last revision two sections were considered; Pachyphytum and Diotostemon; the new species belongs to the first one. The specimens collected in the Sierra de Pénjamo were previously confused with P. machucae, but their comparison showed significant differences in order to consider them as a distinct species. Pachyphytum glutinicaule, another species which it resembles, has a corolla longer than the calyx; however, both species show differences in its petals, bracts and leaves. The inconsistency of the infrageneric classification is discussed in several publications, which is emphasized by the discovery of Pachyphytum confusum. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1401 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2018 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-14012022-11-17T22:37:46Z Pachyphytum confusum (Crassulaceae), a new species from the southwest of the state of Guanajuato, Mexico Pachyphytum confusum (Crassulaceae), una especie nueva del suroeste del estado de Guanajuato, México Pérez-Calix, Emmanuel Guadián-Marín, Jesús Israel García-Ruiz, Ignacio Diotostemon Pachyphytum machucae Pachyphytum glutinicaule Pénjamo Diotostemon Guanajuato Pachyphytum glutinicaule Pénjamo Background and Aims: Pachyphytum (Crassulaceae) is a genus endemic to central Mexico, consisting of hanging and succulent plants that grow on cliffs and slopes. The taxonomic information of Pachyphytum is included in general works on Crassulaceae and a series of articles describing new species. At a regional level, it is included in the treatment of the family Crassulaceae for the Flora del Bajío y de regiones adyacentes. The aim of this work is to name and describe a new species of Pachyphytum based on plants collected in the southeast of the state of Guanajuato.Methods: Excursions were realized to one of the localities in the Sierra de Pénjamo from where the plant was registered, as well as to the type locality of Pachyphytum machucae. Descriptions of the collected plants and a comparative table were prepared, and the literature was searched for morphologically similar species. Key results: Pachyphytum confusum is proposed as a species new to science and is compared with P. machucae and P. glutinicaule which it resembles morphologically. The conservation status of Vulnerable (VU) is assigned.Conclusions: Despite the fact that Pachyphytum consists of 21 especies, it is difficult to interprete their relationships; in its last revision two sections were considered; Pachyphytum and Diotostemon; the new species belongs to the first one. The specimens collected in the Sierra de Pénjamo were previously confused with P. machucae, but their comparison showed significant differences in order to consider them as a distinct species. Pachyphytum glutinicaule, another species which it resembles, has a corolla longer than the calyx; however, both species show differences in its petals, bracts and leaves. The inconsistency of the infrageneric classification is discussed in several publications, which is emphasized by the discovery of Pachyphytum confusum. Antecedentes y Objetivos: Pachyphytum (Crassulaceae) es un género endémico del centro de México; incluye plantas colgantes y suculentas que habitan riscos y taludes. La información taxonómica de Pachyphytum está incluida en obras generales de Crassulaceae y en una serie de artículos en los que se describen especies nuevas. A nivel regional, está contenida en el tratamiento de la familia Crassulaceae para la Flora del Bajío y de regiones adyacentes. El objetivo de este trabajo es nombrar y describir una especie nueva de Pachyphytum con base en plantas colectadas en el suroeste del estado de Guanajuato.Métodos: Se efectuaron excursiones a una de las localidades de donde se registró la planta en la Sierra de Pénjamo, y a la localidad tipo de Pachyphytum machucae. Se realizaron las descripciones de las plantas colectadas y se preparó un cuadro comparativo, se hizo una investigación en la literatura buscando especies semejantes morfológicamente.Resultados clave: Se propone a Pachyphytum confusum como especie nueva para la ciencia, se compara con P. machucae y P. glutinicaule con las que muestra semejanzas morfológicas. Se le asigna el estatus de conservación de Vulnerable (VU).Conclusiones: No obstante que Pachyphytum consta de 21 especies, interpretar sus relaciones ha sido complicado, en su última revisión se optó por considerar dos secciones, Pachyphytum y Diotostemon; la especie nueva se ubica en la primera. A los ejemplares de Pachyphytum colectados en la Sierra de Pénjamo, se les confundió hasta ahora con P. machucae, pero su comparación evidenció diferencias significativas para considerarlos entidades distintas. Otra especie con la que se asemeja, que presenta corolas más grandes que el cáliz, es Pachyphytum glutinicaule; sin embargo, presentan diferencias en los pétalos, en las brácteas y en las hojas. En algunas publicaciones se discute la inconsistencia de la clasificación infragenérica, criterio que se enfatiza con el descubrimiento de Pachyphytum confusum. Instituto de Ecología, A.C. 2018-10-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf text/html https://abm.ojs.inecol.mx/index.php/abm/article/view/1401 10.21829/abm125.2018.1401 Acta Botanica Mexicana; No. 125 (2018); 231-238 Acta Botanica Mexicana; Núm. 125 (2018); 231-238 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1401/pdf_1 https://abm.ojs.inecol.mx/index.php/abm/article/view/1401/html Derechos de autor 2018 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Pérez-Calix, Emmanuel Guadián-Marín, Jesús Israel García-Ruiz, Ignacio Pachyphytum confusum (Crassulaceae), a new species from the southwest of the state of Guanajuato, Mexico |
| title | Pachyphytum confusum (Crassulaceae), a new species from the southwest of the state of Guanajuato, Mexico |
| title_full | Pachyphytum confusum (Crassulaceae), a new species from the southwest of the state of Guanajuato, Mexico |
| title_fullStr | Pachyphytum confusum (Crassulaceae), a new species from the southwest of the state of Guanajuato, Mexico |
| title_full_unstemmed | Pachyphytum confusum (Crassulaceae), a new species from the southwest of the state of Guanajuato, Mexico |
| title_short | Pachyphytum confusum (Crassulaceae), a new species from the southwest of the state of Guanajuato, Mexico |
| title_sort | pachyphytum confusum (crassulaceae), a new species from the southwest of the state of guanajuato, mexico |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1401 |
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