Taxonomic revisión of Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endemic to Mexico, with two new species
Background and Aims: The subtribe Gonolobinae is one of the most diverse in the family Apocynaceae and its taxonomic history continues to undergo numerous changes. Matelea is one of the genera within the subtribe that has undergone the most changes and numerous taxa have been segregated, including t...
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| Định dạng: | Online |
| Ngôn ngữ: | spa |
| Được phát hành: |
Instituto de Ecología, A.C.
2024
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| Truy cập trực tuyến: | https://abm.ojs.inecol.mx/index.php/abm/article/view/2327 |
| _version_ | 1799771443314032640 |
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| author | Alvarado-Cárdenas, Leonardo O. |
| author_facet | Alvarado-Cárdenas, Leonardo O. |
| author_sort | Alvarado-Cárdenas, Leonardo O. |
| collection | ABM |
| description | Background and Aims: The subtribe Gonolobinae is one of the most diverse in the family Apocynaceae and its taxonomic history continues to undergo numerous changes. Matelea is one of the genera within the subtribe that has undergone the most changes and numerous taxa have been segregated, including the monotypic Microstelma. This paper aims to present an updated treatment of Microstelma and the description of two new species, as well as an identification key, images and descriptions of its species.
Methods: Field trips were made and herbarium specimens including types were observed. Taxonomic literature on the taxa treated was consulted, a revision of the genus was made, species plates and distribution maps were prepared, and their conservation status was evaluated.
Key results: Three species are recognized for Microstelma, all endemic to Mexico, two named as new species: M. jimenezii (Michoacán) and M. tenorioi (Guerrero and Oaxaca). The length of the pedicels, the morphology and the reticulation pattern of the corolla, as well as the morphology of the gynostegium and its distribution, allowed to recognize the species.
Conclusions: Microstelma now has three species and is, together with Thoreauea, one of the most diverse endemic genera of Apocynaceae of Mexico. It is important to continue with the revision work for a better understanding of the morphology and systematics of these groups. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-2327 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2024 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-23272024-05-21T18:31:17Z Taxonomic revisión of Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endemic to Mexico, with two new species Revisión taxonómica de Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endémica de México, con dos especies nuevas Alvarado-Cárdenas, Leonardo O. corona ginostegial endemismo Matelea taxonomía endemism gynostegial crown Matelea taxonomy Background and Aims: The subtribe Gonolobinae is one of the most diverse in the family Apocynaceae and its taxonomic history continues to undergo numerous changes. Matelea is one of the genera within the subtribe that has undergone the most changes and numerous taxa have been segregated, including the monotypic Microstelma. This paper aims to present an updated treatment of Microstelma and the description of two new species, as well as an identification key, images and descriptions of its species. Methods: Field trips were made and herbarium specimens including types were observed. Taxonomic literature on the taxa treated was consulted, a revision of the genus was made, species plates and distribution maps were prepared, and their conservation status was evaluated. Key results: Three species are recognized for Microstelma, all endemic to Mexico, two named as new species: M. jimenezii (Michoacán) and M. tenorioi (Guerrero and Oaxaca). The length of the pedicels, the morphology and the reticulation pattern of the corolla, as well as the morphology of the gynostegium and its distribution, allowed to recognize the species. Conclusions: Microstelma now has three species and is, together with Thoreauea, one of the most diverse endemic genera of Apocynaceae of Mexico. It is important to continue with the revision work for a better understanding of the morphology and systematics of these groups. Antecedentes y Objetivos: La subtribu Gonolobinae es una de las más diversas de la familia Apocynaceae y su historia taxonómica sigue pasando por numerosos cambios. Matelea es uno de los géneros dentro de la subtribu que más cambios ha presentado y del cual se han segregado numerosos taxones, entre ellos Microstelma que es monotípico. El objetivo de este trabajo es presentar un tratamiento actualizado de Microstelma y la descripción de dos especies nuevas, así como proporcionar una clave de identificación, imágenes y descripciones de sus especies. Métodos: Se realizaron salidas al campo y se observaron ejemplares de herbario incluyendo tipos. Se consultó la literatura taxonómica relacionada con los taxones tratados, se realizó una revisión del género, se presentan láminas de las especies y mapas de distribución, así como su evaluación del estado de conservación. Resultados clave: Se reconocen tres especies para Microstelma, todas endémicas de México, dos de ellas nombradas como nuevas especies: M. jimenezii (Michoacán) y M. tenorioi (Guerrero y Oaxaca). La longitud de los pedicelos, la morfología y patrón de reticulación de la corola, así como la morfología de la corona ginostegial y su distribución, permitieron el reconocimiento de las especies. Conclusiones: Microstelma ahora tiene tres especies y es, junto con Thoreauea, uno de los géneros de Apocynaceae endémicos de México con más diversidad. Es importante seguir con el trabajo de revisión para el mejor entendimiento de la morfología y sistemática de estos grupos. Instituto de Ecología, A.C. 2024-05-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/epub+zip application/pdf https://abm.ojs.inecol.mx/index.php/abm/article/view/2327 10.21829/abm131.2024.2327 Acta Botanica Mexicana; No. 131 (2024) Acta Botanica Mexicana; Núm. 131 (2024) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/2327/4538 https://abm.ojs.inecol.mx/index.php/abm/article/view/2327/4539 https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Alvarado-Cárdenas, Leonardo O. Taxonomic revisión of Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endemic to Mexico, with two new species |
| title | Taxonomic revisión of Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endemic to Mexico, with two new species |
| title_full | Taxonomic revisión of Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endemic to Mexico, with two new species |
| title_fullStr | Taxonomic revisión of Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endemic to Mexico, with two new species |
| title_full_unstemmed | Taxonomic revisión of Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endemic to Mexico, with two new species |
| title_short | Taxonomic revisión of Microstelma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae), endemic to Mexico, with two new species |
| title_sort | taxonomic revisión of microstelma (apocynaceae, asclepiadoideae, asclepiadeae, gonolobinae), endemic to mexico, with two new species |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/2327 |
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