Morphometric analysis provides evidence for two traditionally defined species of the Tillandsia erubescens complex (Bromeliaceae)
Background and aims – A linear morphometric analysis of three taxa of the Tillandsia erubescens complex, composed of T. erubescens var. arroyoensis, T. erubescens var. erubescens, and T. erubescens var. patentibracteata, is presented to evaluate their circumscription. Additionally, their taxonomic r...
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| Format: | Article |
| Language: | English |
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Meise Botanic Garden
2022-03-01
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| Series: | Plant Ecology and Evolution |
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| Online Access: | https://plecevo.eu/article/84524/download/pdf/ |
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| author | Ana L. Martínez-García Claudia T. Hornung-Leoni Irene Goyenechea Mayer Goyenechea Julian Bueno-Villegas Carolina Granados Mendoza |
| author_facet | Ana L. Martínez-García Claudia T. Hornung-Leoni Irene Goyenechea Mayer Goyenechea Julian Bueno-Villegas Carolina Granados Mendoza |
| author_sort | Ana L. Martínez-García |
| collection | DOAJ |
| description | Background and aims – A linear morphometric analysis of three taxa of the Tillandsia erubescens complex, composed of T. erubescens var. arroyoensis, T. erubescens var. erubescens, and T. erubescens var. patentibracteata, is presented to evaluate their circumscription. Additionally, their taxonomic rank as varieties or species is discussed considering the obtained results. Geographic distribution, the influence of climate, elevation, and geographic distance on morphological differences between the taxonomic entities is explored.Material and methods – Of a total of 110 herbarium specimens reviewed, 44 were measured. These were previously identified as T. erubescens var. arroyoensis, T. erubescens var. erubescens, or T. erubescens var. patentibracteata. Factor and cluster analyses were performed using 16 quantitative morphological characters. The resulting groups were considered as taxonomic entities supported by morphometric characters, and species distributions were plotted against Mexican biogeographic provinces. A single Mantel test was performed to evaluate the correlation between morphology and climatic variables, elevation, and geographic distance.Key results – The specimens referred to as T. erubescens var. arroyoensis were separated morphometrically from the other two varieties. The most important characters to differentiate T. erubescens var. arroyoensis from T. erubescens var. erubescens were total size, width and length of the leaf sheath and leaf blade, and the number of flowers. The non-overlapping geographical distribution of T. erubescens var. arroyoensis and T. erubescens var. erubescens supports their recognition as independent taxonomic entities. Our study did not support the separation between T. erubescens var. erubescens and T. erubescens var. patentibracteata, which is also reflected by their overlapping geographic distributions. Both precipitation and geographic distance were correlated with the morphological differences among the species.Conclusion – Our morphometric and geographical distribution study supports the recognition of T. arroyoensis and T. erubescens as different species, while no evidence was found to maintain T. erubescens var. erubescens and T. erubescens var. patentibracteata as different taxonomic entities. We provide a set of morphological characters that can be used to distinguish between T. arroyoensis and T. erubescens, including the leaf sheath and leaf blade width, and the number of flowers. Morphological characters agree with the geographic distribution of the studied taxa. |
| first_indexed | 2024-03-11T13:52:22Z |
| format | Article |
| id | doaj.art-777bd2abeb0c43a09c011a2dff32503b |
| institution | Directory Open Access Journal |
| issn | 2032-3921 |
| language | English |
| last_indexed | 2024-03-11T13:52:22Z |
| publishDate | 2022-03-01 |
| publisher | Meise Botanic Garden |
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| series | Plant Ecology and Evolution |
| spelling | doaj.art-777bd2abeb0c43a09c011a2dff32503b2023-11-02T08:21:38ZengMeise Botanic GardenPlant Ecology and Evolution2032-39212022-03-011551294010.5091/plecevo.8452484524Morphometric analysis provides evidence for two traditionally defined species of the Tillandsia erubescens complex (Bromeliaceae)Ana L. Martínez-García0Claudia T. Hornung-Leoni1Irene Goyenechea Mayer Goyenechea2Julian Bueno-Villegas3Carolina Granados Mendoza4Doctorado en Ciencias en Biodiversidad y Conservación, Área Académica de Biología, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de HidalgoCentro de Investigaciones Biológicas, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de HidalgoUniversidad Autónoma del Estado de HidalgoUniversidad Autonoma del Estado de HidalgoInstituto de Biología, UNAMBackground and aims – A linear morphometric analysis of three taxa of the Tillandsia erubescens complex, composed of T. erubescens var. arroyoensis, T. erubescens var. erubescens, and T. erubescens var. patentibracteata, is presented to evaluate their circumscription. Additionally, their taxonomic rank as varieties or species is discussed considering the obtained results. Geographic distribution, the influence of climate, elevation, and geographic distance on morphological differences between the taxonomic entities is explored.Material and methods – Of a total of 110 herbarium specimens reviewed, 44 were measured. These were previously identified as T. erubescens var. arroyoensis, T. erubescens var. erubescens, or T. erubescens var. patentibracteata. Factor and cluster analyses were performed using 16 quantitative morphological characters. The resulting groups were considered as taxonomic entities supported by morphometric characters, and species distributions were plotted against Mexican biogeographic provinces. A single Mantel test was performed to evaluate the correlation between morphology and climatic variables, elevation, and geographic distance.Key results – The specimens referred to as T. erubescens var. arroyoensis were separated morphometrically from the other two varieties. The most important characters to differentiate T. erubescens var. arroyoensis from T. erubescens var. erubescens were total size, width and length of the leaf sheath and leaf blade, and the number of flowers. The non-overlapping geographical distribution of T. erubescens var. arroyoensis and T. erubescens var. erubescens supports their recognition as independent taxonomic entities. Our study did not support the separation between T. erubescens var. erubescens and T. erubescens var. patentibracteata, which is also reflected by their overlapping geographic distributions. Both precipitation and geographic distance were correlated with the morphological differences among the species.Conclusion – Our morphometric and geographical distribution study supports the recognition of T. arroyoensis and T. erubescens as different species, while no evidence was found to maintain T. erubescens var. erubescens and T. erubescens var. patentibracteata as different taxonomic entities. We provide a set of morphological characters that can be used to distinguish between T. arroyoensis and T. erubescens, including the leaf sheath and leaf blade width, and the number of flowers. Morphological characters agree with the geographic distribution of the studied taxa.https://plecevo.eu/article/84524/download/pdf/Geographic distributionlinear morphometryspeci |
| spellingShingle | Ana L. Martínez-García Claudia T. Hornung-Leoni Irene Goyenechea Mayer Goyenechea Julian Bueno-Villegas Carolina Granados Mendoza Morphometric analysis provides evidence for two traditionally defined species of the Tillandsia erubescens complex (Bromeliaceae) Plant Ecology and Evolution Geographic distribution linear morphometry speci |
| title | Morphometric analysis provides evidence for two traditionally defined species of the Tillandsia erubescens complex (Bromeliaceae) |
| title_full | Morphometric analysis provides evidence for two traditionally defined species of the Tillandsia erubescens complex (Bromeliaceae) |
| title_fullStr | Morphometric analysis provides evidence for two traditionally defined species of the Tillandsia erubescens complex (Bromeliaceae) |
| title_full_unstemmed | Morphometric analysis provides evidence for two traditionally defined species of the Tillandsia erubescens complex (Bromeliaceae) |
| title_short | Morphometric analysis provides evidence for two traditionally defined species of the Tillandsia erubescens complex (Bromeliaceae) |
| title_sort | morphometric analysis provides evidence for two traditionally defined species of the tillandsia erubescens complex bromeliaceae |
| topic | Geographic distribution linear morphometry speci |
| url | https://plecevo.eu/article/84524/download/pdf/ |
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