Taxonomic delimitation of Arbutus mollis and A. occidentalis (Ericaceae)
Arbutus mollis Kunth in H.B.K. treated since long ago as a synonym of A. xalapensis Kunth in H.B.K. is the correct name for the plants formerly treated as A. occidentalis var. villosa McVaugh & Rosatti. A revision of the complex of A. occidentalis McVaugh & Rosatti reveals that the t...
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| Materiálatiipa: | Online |
| Giella: | spa |
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Instituto de Ecología, A.C.
2022
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| Liŋkkat: | https://abm.ojs.inecol.mx/index.php/abm/article/view/25 |
| _version_ | 1799771093143126016 |
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| author | González-Elizondo, M. Socorro González-Elizondo, Martha Zamudio, Sergio |
| author_facet | González-Elizondo, M. Socorro González-Elizondo, Martha Zamudio, Sergio |
| author_sort | González-Elizondo, M. Socorro |
| collection | ABM |
| description | Arbutus mollis Kunth in H.B.K. treated since long ago as a synonym of A. xalapensis Kunth in H.B.K. is the correct name for the plants formerly treated as A. occidentalis var. villosa McVaugh & Rosatti. A revision of the complex of A. occidentalis McVaugh & Rosatti reveals that the two varieties originally described for that species differ in characters of foliage, indument and inflorescence, which suggests an origin from different lineages and justify their separation to the species level, and therefore A. mollis is recognized here as an independent species. The shrubby habit shared by A. mollis and A. occidentalis is probably a case of convergent evolution. The taxonomic reinstatement of A. mollis is made and amended descriptions for A. mollis and A. occidentalis and a key to distinguish them are given. Apparent intermediates are either morphs, hybrids, stump sprouts of tree species after fire or cutting, or rarely shrubby forms of other species. The following hybrids are documented: Arbutus mollis x A. tessellata (Guanajuato and Michoacán), Arbutus mollis x A. xalapensis (Querétaro), Arbutus occidentalis x A. arizonica (Durango, Aguascalientes, and Jalisco), Arbutus occidentalis x A. tessellata (Jalisco), Arbutus occidentalis x Arbutus bicolor (Chihuahua and Durango), and Arbutus occidentalis x Arbutus aff. xalapensis (Durango and Jalisco). |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-25 |
| 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-252022-12-23T05:12:23Z Taxonomic delimitation of Arbutus mollis and A. occidentalis (Ericaceae) Delimitación taxonómica de Arbutus mollis y A. occidentalis (Ericaceae) González-Elizondo, M. Socorro González-Elizondo, Martha Zamudio, Sergio Arbutus xalapensis hybrids introgression madrone morphssystematics Arbutus xalapensis híbridos introgresión madroño sistemática variantes morfológicas Arbutus mollis Kunth in H.B.K. treated since long ago as a synonym of A. xalapensis Kunth in H.B.K. is the correct name for the plants formerly treated as A. occidentalis var. villosa McVaugh & Rosatti. A revision of the complex of A. occidentalis McVaugh & Rosatti reveals that the two varieties originally described for that species differ in characters of foliage, indument and inflorescence, which suggests an origin from different lineages and justify their separation to the species level, and therefore A. mollis is recognized here as an independent species. The shrubby habit shared by A. mollis and A. occidentalis is probably a case of convergent evolution. The taxonomic reinstatement of A. mollis is made and amended descriptions for A. mollis and A. occidentalis and a key to distinguish them are given. Apparent intermediates are either morphs, hybrids, stump sprouts of tree species after fire or cutting, or rarely shrubby forms of other species. The following hybrids are documented: Arbutus mollis x A. tessellata (Guanajuato and Michoacán), Arbutus mollis x A. xalapensis (Querétaro), Arbutus occidentalis x A. arizonica (Durango, Aguascalientes, and Jalisco), Arbutus occidentalis x A. tessellata (Jalisco), Arbutus occidentalis x Arbutus bicolor (Chihuahua and Durango), and Arbutus occidentalis x Arbutus aff. xalapensis (Durango and Jalisco). Arbutus mollis Kunth in H.B.K., tradicionalmente considerado como un sinónimo de A. xalapensis Kunth in H.B.K., es el nombre más antiguo para las plantas conocidas como A. occidentalis var. villosa McVaugh & Rosatti. La revisión de los madroños de porte arbustivo que han sido incluidos bajo el nombre de A. occidentalis McVaugh & Rosatti revela que las dos variedades descritas para esa especie, posteriormente reducidas a sinonimia, difieren en varios caracteres morfológicos que sugieren un origen a partir de diferentes linajes, lo que justifica su separación a nivel de especie, por lo que A. mollis es reconocida como taxon independiente. El hábito arbustivo compartido por A. mollis y A. occidentalis probablemente representa un caso de evolución convergente. Con base en la nueva delimitación de A. mollis y de A. occidentalis se presentan descripciones enmendadas de ambas, así como una clave para separarlas. Los aparentes intermedios representan ya sea variantes morfológicas, híbridos, retoños de tocones de árboles después del corte o del fuego, o rara vez formas arbustivas de otras especies. Se comentan algunas de las variantes morfológicas y se documentan los siguientes híbridos: Arbutus mollis x A. tessellata (Guanajuato y Michoacán), Arbutus mollis x A. xalapensis (Querétaro), Arbutus occidentalis x A. arizonica (Durango, Aguascalientes y Jalisco), Arbutus occidentalis x A. tessellata (Jalisco), Arbutus occidentalis x Arbutus bicolor (Chihuahua y Durango) y Arbutus occidentalis x Arbutus aff. xalapensis (Durango y Jalisco). Instituto de Ecología, A.C. 2022-03-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf text/html https://abm.ojs.inecol.mx/index.php/abm/article/view/25 10.21829/abm101.2012.25 Acta Botanica Mexicana; No. 101 (2012); 49-81 Acta Botanica Mexicana; Núm. 101 (2012); 49-81 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/25/37 https://abm.ojs.inecol.mx/index.php/abm/article/view/25/73 Derechos de autor 2015 Acta Botánica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | González-Elizondo, M. Socorro González-Elizondo, Martha Zamudio, Sergio Taxonomic delimitation of Arbutus mollis and A. occidentalis (Ericaceae) |
| title | Taxonomic delimitation of Arbutus mollis and A. occidentalis (Ericaceae) |
| title_full | Taxonomic delimitation of Arbutus mollis and A. occidentalis (Ericaceae) |
| title_fullStr | Taxonomic delimitation of Arbutus mollis and A. occidentalis (Ericaceae) |
| title_full_unstemmed | Taxonomic delimitation of Arbutus mollis and A. occidentalis (Ericaceae) |
| title_short | Taxonomic delimitation of Arbutus mollis and A. occidentalis (Ericaceae) |
| title_sort | taxonomic delimitation of arbutus mollis and a. occidentalis (ericaceae) |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/25 |
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