Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus
Background and Aims: Zamia, with 86 species, is the most diverse Neotropical cycad genus. In Mexico, 18 species occur, of which 15 are endemics. These taxa are distributed from sea level to 1200 m a.s.l. Recently, the phenology of Zamia in wild populations from southern Veracruz and Tabasco was stud...
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| Formaat: | Online |
| Taal: | eng |
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Instituto de Ecología, A.C.
2024
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| Online toegang: | https://abm.ojs.inecol.mx/index.php/abm/article/view/2262 |
| _version_ | 1799771440221782016 |
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| author | Nicolalde-Morejón, Fernando Martínez-Domínguez, Lilí González-Aguilar, Marlon Aramis Stevenson, Dennis Wm. |
| author_facet | Nicolalde-Morejón, Fernando Martínez-Domínguez, Lilí González-Aguilar, Marlon Aramis Stevenson, Dennis Wm. |
| author_sort | Nicolalde-Morejón, Fernando |
| collection | ABM |
| description | Background and Aims: Zamia, with 86 species, is the most diverse Neotropical cycad genus. In Mexico, 18 species occur, of which 15 are endemics. These taxa are distributed from sea level to 1200 m a.s.l. Recently, the phenology of Zamia in wild populations from southern Veracruz and Tabasco was studied to evaluate the morphological patterns of reproductive structures. While these records have been considered as Z. loddigesii, a species with a wide distribution along the Gulf of Mexico, different populations do possess morphological differences. Based on these data, we reevaluated the synonymy of Z. lawsoniana, which was described in 1884 and synonymized with Z. loddigesii in 1995.
Methods: Botanical material was collected from three populations in Tabasco, ten in Veracruz and two in Oaxaca previously considered part of Z. loddigesii. Reproductive structures were measured at maturity in habitat. Populations were visited during 2022 and 2023 to record reproductive phenology. Herbarium specimens of Zamia lawsoniana and morphologically similar species (Z. loddigesii, Z. spartea and Z. stenophyllidia) were examined. A morphological description and an illustration for Z. lawsoniana were prepared. In addition, an identification key that included related species in terms of morphology, geography and phylogenetics was made.
Key results: Zamia lawsoniana is removed from synonymy and some taxonomic clarifications are made. In this context, we provide a complete description of pollen strobili, including the microsporophylls, range of vegetative morphological variation, and a botanical illustration. Additionally, the ovulate strobilus is described for the first time and a preliminary conservation status is proposed.
Conclusions: Based on morphological evidence of reproductive structures and vegetative characters, we propose the reestablishment of Zamia lawsoniana and its removal from synonymy with Z. loddigesii. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-2262 |
| institution | Acta Botanica Mexicana |
| language | eng |
| publishDate | 2024 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-22622024-05-08T19:44:07Z Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus Restablecimiento de Zamia lawsoniana (Zamiaceae, Cycadales), una especie endémica de México, con primera descripción del estróbilo ovulífero Nicolalde-Morejón, Fernando Martínez-Domínguez, Lilí González-Aguilar, Marlon Aramis Stevenson, Dennis Wm. gimnospermas Mesoamerica Neotrópico taxonomía gymnosperms Mesoamerica Neotropics taxonomy Background and Aims: Zamia, with 86 species, is the most diverse Neotropical cycad genus. In Mexico, 18 species occur, of which 15 are endemics. These taxa are distributed from sea level to 1200 m a.s.l. Recently, the phenology of Zamia in wild populations from southern Veracruz and Tabasco was studied to evaluate the morphological patterns of reproductive structures. While these records have been considered as Z. loddigesii, a species with a wide distribution along the Gulf of Mexico, different populations do possess morphological differences. Based on these data, we reevaluated the synonymy of Z. lawsoniana, which was described in 1884 and synonymized with Z. loddigesii in 1995. Methods: Botanical material was collected from three populations in Tabasco, ten in Veracruz and two in Oaxaca previously considered part of Z. loddigesii. Reproductive structures were measured at maturity in habitat. Populations were visited during 2022 and 2023 to record reproductive phenology. Herbarium specimens of Zamia lawsoniana and morphologically similar species (Z. loddigesii, Z. spartea and Z. stenophyllidia) were examined. A morphological description and an illustration for Z. lawsoniana were prepared. In addition, an identification key that included related species in terms of morphology, geography and phylogenetics was made. Key results: Zamia lawsoniana is removed from synonymy and some taxonomic clarifications are made. In this context, we provide a complete description of pollen strobili, including the microsporophylls, range of vegetative morphological variation, and a botanical illustration. Additionally, the ovulate strobilus is described for the first time and a preliminary conservation status is proposed. Conclusions: Based on morphological evidence of reproductive structures and vegetative characters, we propose the reestablishment of Zamia lawsoniana and its removal from synonymy with Z. loddigesii. Antecedentes y Objetivos: Zamia, con 86 especies, es el género más diverso de cícadas neotropicales. En México se distribuyen 18 especies, de las cuales 15 son endémicas. Esos taxones se distribuyen desde el nivel del mar hasta 1200 m s.n.m. Recientemente, se estudió la fenología de poblaciones silvestres de Zamia en el sur de Veracruz y Tabasco para evaluar los patrones de variación morfológica de las estructuras reproductivas. Si bien estos registros han sido considerados como Z. loddigesii, especie de amplia distribución a lo largo del Golfo de México, poseen diferencias morfológicas. Basado en estos datos, reevaluamos la sinonimia de Z. lawsoniana, la cual es una especie descrita en 1884 y sinonimizada en 1995 con Z. loddigesii. Métodos: Material botánico fue colectado en tres poblaciones en Tabasco, diez en Veracruz y dos en Oaxaca previamente consideradas parte de Zamia loddigesii. Se midieron estructuras reproductivas en madurez en hábitat. Las poblaciones fueron visitadas durante 2022 y 2023 para registrar la fenología reproductiva. Ejemplares de herbario de Z. lawsoniana y de las especies morfológicamente similares fueron examinados (Z. loddigesii, Z. spartea y Z. stenophyllidia). Se preparó la descripción morfológica y una ilustración para Z. lawsoniana. Además, se elaboró una clave de identificación que incluye a las especies relacionadas en términos morfológicos, geográficos y filogenéticos. Resultados clave: Zamia lawsoniana es removida de sinonimia y se realizan algunas aclaraciones taxonómicas. En este contexto, proporcionamos una descripción completa de los estróbilos poliníferos, incluidas las microsporófilas, el rango de variación morfológica vegetativa y una ilustración botánica. Adicionalmente, se describe por primera vez el estróbilo ovulífero y se propone el estado de conservación preliminar. Conclusiones: Basados en evidencia morfológica reproductiva y caracteres vegetativos, proponemos el reestablecimiento de Zamia lawsoniana y su remoción de la sinonimia con Z. loddigesii. Instituto de Ecología, A.C. 2024-05-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf application/epub+zip https://abm.ojs.inecol.mx/index.php/abm/article/view/2262 10.21829/abm131.2024.2262 Acta Botanica Mexicana; No. 131 (2024) Acta Botanica Mexicana; Núm. 131 (2024) 2448-7589 0187-7151 eng https://abm.ojs.inecol.mx/index.php/abm/article/view/2262/4533 https://abm.ojs.inecol.mx/index.php/abm/article/view/2262/4534 https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Nicolalde-Morejón, Fernando Martínez-Domínguez, Lilí González-Aguilar, Marlon Aramis Stevenson, Dennis Wm. Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus |
| title | Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus |
| title_full | Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus |
| title_fullStr | Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus |
| title_full_unstemmed | Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus |
| title_short | Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus |
| title_sort | reestablishment of zamia lawsoniana (zamiaceae, cycadales), an endemic species of mexico, with first description of the ovulate strobilus |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/2262 |
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