The climbing Hydrangeas (Hydrangeaceae) of Mexico, including description of six (critically) endangered new species
Background and Aims: The genus Hydrangea consists of approximately 200 taxa in Asia and America. Whereas the shrubby species from Asia and the USA, as well as the over 1000 hybrids and cultivars derived from these, are very well known because of their ornamental value, the Neotropical species are mu...
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| Format: | Online |
| Language: | eng |
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Instituto de Ecología, A.C.
2019
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| Online Access: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1463 |
| _version_ | 1799771354838335488 |
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| author | Samain, Marie-Stéphanie Hernández Najarro, Francisco Martínez Salas, Esteban Manuel |
| author_facet | Samain, Marie-Stéphanie Hernández Najarro, Francisco Martínez Salas, Esteban Manuel |
| author_sort | Samain, Marie-Stéphanie |
| collection | ABM |
| description | Background and Aims: The genus Hydrangea consists of approximately 200 taxa in Asia and America. Whereas the shrubby species from Asia and the USA, as well as the over 1000 hybrids and cultivars derived from these, are very well known because of their ornamental value, the Neotropical species are much less appreciated. Hydrangea section Cornidia, currently consisting of 13 accepted taxa, occurs from Mexico to Chile and Argentina, with one species in southeast Asia. Its representatives are root-climbing lianas which may grow up to 60 m high in the tree canopy of temperate to (sub)tropical forests. Extensive field work throughout their distribution area and study of herbarium specimens has resulted in the discovery of new taxa. We present here a revision of the ten currently known Mexican species.Methods: Field work was carried out in northwestern, central and southeastern Mexico, including exploration in areas where the genus had not been collected before. Detailed morphological and architectural studies of all species were carried out, based on living plants in their natural habitat, as well as on dried specimens from our own collections and all available herbarium material.Key results: Six Hydrangea species new to science are described here, including an identification key for the native species and one widely cultivated species, illustrations and distribution maps. Additionally, amended descriptions for two earlier described species are presented, as a result of which all currently known native Mexican Hydrangeas now dispose of a detailed morphological description.Conclusions: The genus Hydrangea exemplifies the lack of taxon-specific botanical collection activities in Mexico. The discovery of these new species is even more surprising taking into account the considerable size of these plants. All Mexican Hydrangea species are threatened, mainly due to deforestation and land use changes. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1463 |
| institution | Acta Botanica Mexicana |
| language | eng |
| publishDate | 2019 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-14632022-11-17T22:05:41Z The climbing Hydrangeas (Hydrangeaceae) of Mexico, including description of six (critically) endangered new species Las Hydrangeas trepadoras (Hydrangeaceae) de México, incluyendo la descripción de seis nuevas especies en peligro (crítico) Samain, Marie-Stéphanie Hernández Najarro, Francisco Martínez Salas, Esteban Manuel conservation functional dioecism hortensia lianas Neotropics taxonomy conservación dioicismo funcional hortensia lianas Neotrópico taxonomía Background and Aims: The genus Hydrangea consists of approximately 200 taxa in Asia and America. Whereas the shrubby species from Asia and the USA, as well as the over 1000 hybrids and cultivars derived from these, are very well known because of their ornamental value, the Neotropical species are much less appreciated. Hydrangea section Cornidia, currently consisting of 13 accepted taxa, occurs from Mexico to Chile and Argentina, with one species in southeast Asia. Its representatives are root-climbing lianas which may grow up to 60 m high in the tree canopy of temperate to (sub)tropical forests. Extensive field work throughout their distribution area and study of herbarium specimens has resulted in the discovery of new taxa. We present here a revision of the ten currently known Mexican species.Methods: Field work was carried out in northwestern, central and southeastern Mexico, including exploration in areas where the genus had not been collected before. Detailed morphological and architectural studies of all species were carried out, based on living plants in their natural habitat, as well as on dried specimens from our own collections and all available herbarium material.Key results: Six Hydrangea species new to science are described here, including an identification key for the native species and one widely cultivated species, illustrations and distribution maps. Additionally, amended descriptions for two earlier described species are presented, as a result of which all currently known native Mexican Hydrangeas now dispose of a detailed morphological description.Conclusions: The genus Hydrangea exemplifies the lack of taxon-specific botanical collection activities in Mexico. The discovery of these new species is even more surprising taking into account the considerable size of these plants. All Mexican Hydrangea species are threatened, mainly due to deforestation and land use changes. Antecedentes y Objetivos: El género Hydrangea consta de aproximadamente 200 taxones en Asia y América. Mientras que las especies arbustivas de Asia y los EUA, así como los más de 1000 híbridos y cultivares derivados de estos, son muy conocidos por su valor ornamental, las especies neotropicales son mucho menos apreciadas. Hydrangea sección Cornidia, con 13 taxones aceptados, se distribuye desde México hasta Chile y Argentina, con una especie en el sureste de Asia. Sus representantes son lianas trepadoras que pueden crecer hasta 60 m de altura en el dosel de árboles de bosques templados a selvas (sub)tropicales. Extenso trabajo de campo a lo largo de su área de distribución y estudio de especímenes de herbario ha resultado en el descubrimiento de nuevos taxones. Presentamos una revisión de las diez especies mexicanas actualmente conocidas.Métodos: Se llevó a cabo trabajo de campo en el noroeste, centro y sureste de México, incluida la exploración en áreas donde el género no se había recolectado anteriormente. Se llevaron a cabo estudios morfológicos y arquitectónicos detallados, basados en plantas vivas en su hábitat natural, así como en muestras secas de nuestras colecciones y el material de herbario disponible.Resultados clave: Se describen seis especies nuevas para la ciencia, incluyendo una clave de identificación para las nativas y una ampliamente cultivada, ilustraciones y mapas de distribución. Se presentan descripciones enmendadas para dos especies descritas anteriormente, por lo que todas las Hydrangeas mexicanas conocidas actualmente cuentan con una descripción morfológica detallada.Conclusiones: El género Hydrangea ejemplifica la falta de actividades de recolección botánica específicas de taxones en México. El descubrimiento de estas nuevas especies es aún más sorprendente teniendo en cuenta el tamaño considerable de estas plantas. Todas las especies mexicanas están amenazadas, principalmente debido a la deforestación y cambios en el uso del suelo. Instituto de Ecología, A.C. 2019-01-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf application/epub+zip application/xml https://abm.ojs.inecol.mx/index.php/abm/article/view/1463 10.21829/abm126.2019.1463 Acta Botanica Mexicana; No. 126 (2019) Acta Botanica Mexicana; Núm. 126 (2019) 2448-7589 0187-7151 eng https://abm.ojs.inecol.mx/index.php/abm/article/view/1463/4030 https://abm.ojs.inecol.mx/index.php/abm/article/view/1463/4032 https://abm.ojs.inecol.mx/index.php/abm/article/view/1463/1835 Derechos de autor 2019 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Samain, Marie-Stéphanie Hernández Najarro, Francisco Martínez Salas, Esteban Manuel The climbing Hydrangeas (Hydrangeaceae) of Mexico, including description of six (critically) endangered new species |
| title | The climbing Hydrangeas (Hydrangeaceae) of Mexico, including description of six (critically) endangered new species |
| title_full | The climbing Hydrangeas (Hydrangeaceae) of Mexico, including description of six (critically) endangered new species |
| title_fullStr | The climbing Hydrangeas (Hydrangeaceae) of Mexico, including description of six (critically) endangered new species |
| title_full_unstemmed | The climbing Hydrangeas (Hydrangeaceae) of Mexico, including description of six (critically) endangered new species |
| title_short | The climbing Hydrangeas (Hydrangeaceae) of Mexico, including description of six (critically) endangered new species |
| title_sort | climbing hydrangeas (hydrangeaceae) of mexico, including description of six (critically) endangered new species |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1463 |
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