A new species of Miconia (Melastomataceae) from the high Andean forest of Bogotá D.C., Colombia
Background and Aims: Miconia, with over 1900 species, is the largest exclusively Neotropical genus of woody vascular plants and one of the largest among flowering plants globally. During the development of the Flora de Bogotá project, an undescribed species of Miconia, unique among its congeners in...
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| Format: | Online |
| Sprache: | spa |
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Instituto de Ecología, A.C.
2022
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| Online Zugang: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1979 |
| _version_ | 1799771410996920320 |
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| author | Mendoza-Cifuentes, Humberto |
| author_facet | Mendoza-Cifuentes, Humberto |
| author_sort | Mendoza-Cifuentes, Humberto |
| collection | ABM |
| description | Background and Aims: Miconia, with over 1900 species, is the largest exclusively Neotropical genus of woody vascular plants and one of the largest among flowering plants globally. During the development of the Flora de Bogotá project, an undescribed species of Miconia, unique among its congeners in terms of growth habit and trichome type, was found. The aim of this paper is to describe this new species so far known only from the surroundings of the Capital District and to compare it with the most morphologically similar taxa.Methods: The description and illustration of this new species were based on collections deposited in the JBB herbarium of the Botanical Garden of Bogotá. Vegetative and inflorescence measurements were made on dry herbarium material, while the floral and fruit measurements were obtained from rehydrated herbarium material. The conservation status is suggested based on the IUCN criteria.Key results: Miconia mahechae sp. nov. is characterized by the lianescent shrubby habit, oblong internodes, dense lanate indumentum of elongated moderately roughened trichomes on internodes, petioles and inflorescence, ovate to elliptical and 3-nerved leaves with obtuse to acute apex and smooth adaxial leaf surface, inconspicuous bracteoles, oblong-obovate anthers with an apical pore, and basal connective without appendages. Conclusions: This new species is morphologically close to M. ruizteranii; however, the new species differs by the shape of its anthers and the indumentum of stems and inflorescences. Miconia mahechae has been collected only in areas surrounding the city of Bogotá and the Chingaza and Sumapaz National Parks, in areas of the high Andean forest. Based on the IUCN criteria, we suggest its categorization as Vulnerable (VU). |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1979 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-19792022-04-04T18:06:40Z A new species of Miconia (Melastomataceae) from the high Andean forest of Bogotá D.C., Colombia Una nueva especie de Miconia (Melastomataceae) de los bosques altoandinos de Bogotá D.C., Colombia Mendoza-Cifuentes, Humberto bosque altoandino Miconieae norte de los Andes taxonomía high Andean forest Miconieae Northern Andes taxonomy Background and Aims: Miconia, with over 1900 species, is the largest exclusively Neotropical genus of woody vascular plants and one of the largest among flowering plants globally. During the development of the Flora de Bogotá project, an undescribed species of Miconia, unique among its congeners in terms of growth habit and trichome type, was found. The aim of this paper is to describe this new species so far known only from the surroundings of the Capital District and to compare it with the most morphologically similar taxa.Methods: The description and illustration of this new species were based on collections deposited in the JBB herbarium of the Botanical Garden of Bogotá. Vegetative and inflorescence measurements were made on dry herbarium material, while the floral and fruit measurements were obtained from rehydrated herbarium material. The conservation status is suggested based on the IUCN criteria.Key results: Miconia mahechae sp. nov. is characterized by the lianescent shrubby habit, oblong internodes, dense lanate indumentum of elongated moderately roughened trichomes on internodes, petioles and inflorescence, ovate to elliptical and 3-nerved leaves with obtuse to acute apex and smooth adaxial leaf surface, inconspicuous bracteoles, oblong-obovate anthers with an apical pore, and basal connective without appendages. Conclusions: This new species is morphologically close to M. ruizteranii; however, the new species differs by the shape of its anthers and the indumentum of stems and inflorescences. Miconia mahechae has been collected only in areas surrounding the city of Bogotá and the Chingaza and Sumapaz National Parks, in areas of the high Andean forest. Based on the IUCN criteria, we suggest its categorization as Vulnerable (VU). Antecedentes y Objetivos: Miconia, con cerca de 1900 especies, es el género de las angiospermas leñosas más diverso en el Neotrópico y uno de los más grandes del planeta. Durante el desarrollo del proyecto Flora de Bogotá, se encontró una especie no descrita de Miconia, única entre sus congéneres en caracteres de hábito de crecimiento y tipo de tricomas. El objetivo de este artículo es describir esta nueva especie hasta ahora conocida solo de los alrededores del Distrito Capital y compararla con los taxones más similares morfológicamente. Métodos: Se realizó la descripción e ilustración de la nueva especie a partir de colecciones depositadas en el herbario JBB del Jardín Botánico de Bogotá. Las medidas de las partes vegetativas e inflorescencia se realizaron a partir de material seco, mientras que las estructuras florales y frutos fueron medidas a partir de material rehidratado. Se sugiere su estado de conservación con base en los criterios de la IUCN.Resultados clave: Miconia mahechae sp. nov. se caracteriza por su hábito arbustivo-lianescente, entrenudos oblongos, indumento denso-lanoso compuesto de tricomas alargado-irregulares rugosos en entrenudos, peciolos e inflorescencia, hojas ovado a elípticas, 3-nervadas, con la haz lisa y ápice obtuso o agudo, bractéolas inconspicuas, anteras oblongo-obovadas con un poro apical y conectivo basal sin prolongaciones.Conclusiones: La especie nueva se relaciona morfológicamente con Miconia ruizteranii, de la cual se distingue por la forma de las anteras y el indumento de tallos e inflorescencia. Hasta el momento, M. mahechae solo se conoce de los alrededores de la ciudad de Bogotá y los Parques Nacionales Chingaza y Sumapaz, en zonas de bosque altoandino. Con base en los criterios de la IUCN se sugiere su categorización como Vulnerable (VU). Instituto de Ecología, A.C. 2022-01-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/xml application/epub+zip https://abm.ojs.inecol.mx/index.php/abm/article/view/1979 10.21829/abm129.2022.1979 Acta Botanica Mexicana; No. 129 (2022) Acta Botanica Mexicana; Núm. 129 (2022) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1979/4051 https://abm.ojs.inecol.mx/index.php/abm/article/view/1979/4181 https://abm.ojs.inecol.mx/index.php/abm/article/view/1979/4052 https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Mendoza-Cifuentes, Humberto A new species of Miconia (Melastomataceae) from the high Andean forest of Bogotá D.C., Colombia |
| title | A new species of Miconia (Melastomataceae) from the high Andean forest of Bogotá D.C., Colombia |
| title_full | A new species of Miconia (Melastomataceae) from the high Andean forest of Bogotá D.C., Colombia |
| title_fullStr | A new species of Miconia (Melastomataceae) from the high Andean forest of Bogotá D.C., Colombia |
| title_full_unstemmed | A new species of Miconia (Melastomataceae) from the high Andean forest of Bogotá D.C., Colombia |
| title_short | A new species of Miconia (Melastomataceae) from the high Andean forest of Bogotá D.C., Colombia |
| title_sort | new species of miconia (melastomataceae) from the high andean forest of bogotá d.c., colombia |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1979 |
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