Quercus leseuri, a southern member of the Q. x undulata complex (Fagaceae, subgenus Quercus)
Quercus gambelii Nutt. is a widespread White oak (Quercus, subgenus and section Quercus, subsection Gambelieae) in the southern Rocky Mountain region of the United States, extending to west-central Chihuahua in the Sierra Madre Occidental of Mexico. Quercus arizonica Sarg., rather distantly related...
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| Materiálatiipa: | Online |
| Giella: | spa |
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Instituto de Ecología, A.C.
1998
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| Liŋkkat: | https://abm.ojs.inecol.mx/index.php/abm/article/view/795 |
| _version_ | 1799771208444542976 |
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| author | Spellenberg, Richard |
| author_facet | Spellenberg, Richard |
| author_sort | Spellenberg, Richard |
| collection | ABM |
| description | Quercus gambelii Nutt. is a widespread White oak (Quercus, subgenus and section Quercus, subsection Gambelieae) in the southern Rocky Mountain region of the United States, extending to west-central Chihuahua in the Sierra Madre Occidental of Mexico. Quercus arizonica Sarg., rather distantly related (subsection Glaucoideae), has a more southern distribution in the United States, and extends through the Sierra Madre into Durango. In the southwestern United States hybrids between Q. gambelii and several White oak vegetation, particularly in New Mexico. These hybrids are known in general as Q. x undulata Torr. pro sp. A plant very similar to Q. x. undulata, Q. lesueuri C. H. Muller, was collected by Harde LeSueur at “El Salto de Babícora”, in west-central Chihuahua, in 1937. It has not been collected since. An oak similar to Q. lesueurii was collected by the autor in the nearby Sierra Catarina where it is a sympatric with Q. gambelii and Q. arazonica. El Salto de Babícora was determined to be located north of the town of Madera. In this canyon Q. gambelii and Q. arizonica are common. Quercus lesueuri and the newly collected hybrid from the Sierra Catarina are shown to be strongly similar to Q. x undulata and intermediate between Q. arizonica and Q. gambelii through the use of the same six leaf characters (leaf width, relative Depth of indentations of leaf margin, conspicuousness of intercostal reticulum, number of major secondary veins, number of rays per stellate hair, curliness of hairs) that Tucker used to assess intermediacy of certain collections to the putative parents Q. gambelii and Q. arizonica. In this paper Q. lesueuri is demonstrated to be parto f this hybrid complex. Taxonomically it should be recognized as Q. x lesueuri C. H. Muller, pro sp., and to be considered as a synonym of Q. x undulata, sensu lato. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-795 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 1998 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-7952022-12-24T05:45:23Z Quercus leseuri, a southern member of the Q. x undulata complex (Fagaceae, subgenus Quercus) Quercus lesueuri, un miembro meridional del complejo de Q. x undulata (Fagaceae, subgénero Quercus) Spellenberg, Richard hybrids oak taxonomic comparison white oak. encino encino blanco comparación taxonómica híbridos. Quercus gambelii Nutt. is a widespread White oak (Quercus, subgenus and section Quercus, subsection Gambelieae) in the southern Rocky Mountain region of the United States, extending to west-central Chihuahua in the Sierra Madre Occidental of Mexico. Quercus arizonica Sarg., rather distantly related (subsection Glaucoideae), has a more southern distribution in the United States, and extends through the Sierra Madre into Durango. In the southwestern United States hybrids between Q. gambelii and several White oak vegetation, particularly in New Mexico. These hybrids are known in general as Q. x undulata Torr. pro sp. A plant very similar to Q. x. undulata, Q. lesueuri C. H. Muller, was collected by Harde LeSueur at “El Salto de Babícora”, in west-central Chihuahua, in 1937. It has not been collected since. An oak similar to Q. lesueurii was collected by the autor in the nearby Sierra Catarina where it is a sympatric with Q. gambelii and Q. arazonica. El Salto de Babícora was determined to be located north of the town of Madera. In this canyon Q. gambelii and Q. arizonica are common. Quercus lesueuri and the newly collected hybrid from the Sierra Catarina are shown to be strongly similar to Q. x undulata and intermediate between Q. arizonica and Q. gambelii through the use of the same six leaf characters (leaf width, relative Depth of indentations of leaf margin, conspicuousness of intercostal reticulum, number of major secondary veins, number of rays per stellate hair, curliness of hairs) that Tucker used to assess intermediacy of certain collections to the putative parents Q. gambelii and Q. arizonica. In this paper Q. lesueuri is demonstrated to be parto f this hybrid complex. Taxonomically it should be recognized as Q. x lesueuri C. H. Muller, pro sp., and to be considered as a synonym of Q. x undulata, sensu lato. Quercus gambelii Nutt. es un encino blanco (Quercus, subgénero y sección Quercus, subsección Gambelieae) común en la parte sur de la región de las Montañas Rocosas en los Estados Unidos y distribuido hasta la parte central de la porción chihuahuense de la Sierra Madre Occidental. Quercus arizonica Sarg., lejanamente relacionado con el anterior (subsección Glaucoideae), tiene una distribución más austral en los Estados Unidos y se extiende a través de la Sierra Madre Occidental hasta Durango. En el suroeste de los Estados Unidos son muy comunes los híbridos entre Q. gambelii y algunos encinos blancos, incluyendo a Q. arizonica, mismos que forman frecuentemente una parte importante de la vegetación de encinares de zonas bajas, particularmente en el estado de Nuevo México. Estos híbridos se conocen en general como Q. x undulata Torr. pro sp. Una planta muy similar a Q. x undulata, llamada Q. leseuri C. H. Muller, fue colectada por Harde LeSeur en “El Salto de Babícora”, en el oeste-centro de Chihuahua en el año 1937. Y no se ha vuelto a encontrar desde entonces. Un encino semejante a Q. lesueuri fue localizado por el autor en la cercana Sierra Catarina, donde es simpátrico con Q. gambelii y Q. arizonica. El Salto de Babícora se localiza al norte del pueblo de Madera en un cañón donde Q. gambelii y Q. arizonica son comunes. En este trabajo se muestra que Q. lesueuri y el híbrido colectado recientemente en la Sierra Catarina son muy similares entre sí y con Q. x undulata, e intermedios entre Q. arizonica y Q. gambelii. La comparación se llevó a cabo mediante el uso de los mismos seis caracteres empleados por Tucker para determinar la posición intermedia de varias colectas con respecto a los padres putativos Q. gambelii y Q. arizonica, a saber: anchura de la hoja, profundidad relativa de las muescas del margen de la lámina, evidencia del retículo intercostal, número de las venas secundarias, número de radios por cada tricoma estrellado, y grado intercostal, número de las venas secundarias, número de radios por cada tricoma estrellado, y grado de ensortijamiento de los tricomas. Se concluye que Q. lesueuri forma parte del complejo híbrido en cuestión, por lo que taxonómicamente debe ser conocido como Q. x lesueuri forma parte del complejo híbrido en cuestión, por lo que taxonómicamente debe ser conocido como Q. x lesueuri C. H. Muller, pro sp., y ser considerado como sinónimo de Q. x undulata, sensu lato. Instituto de Ecología, A.C. 1998-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf https://abm.ojs.inecol.mx/index.php/abm/article/view/795 10.21829/abm42.1998.795 Acta Botanica Mexicana; No. 42 (1998); 25-33 Acta Botanica Mexicana; Núm. 42 (1998); 25-33 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/795/961 Derechos de autor 2016 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Spellenberg, Richard Quercus leseuri, a southern member of the Q. x undulata complex (Fagaceae, subgenus Quercus) |
| title | Quercus leseuri, a southern member of the Q. x undulata complex (Fagaceae, subgenus Quercus) |
| title_full | Quercus leseuri, a southern member of the Q. x undulata complex (Fagaceae, subgenus Quercus) |
| title_fullStr | Quercus leseuri, a southern member of the Q. x undulata complex (Fagaceae, subgenus Quercus) |
| title_full_unstemmed | Quercus leseuri, a southern member of the Q. x undulata complex (Fagaceae, subgenus Quercus) |
| title_short | Quercus leseuri, a southern member of the Q. x undulata complex (Fagaceae, subgenus Quercus) |
| title_sort | quercus leseuri, a southern member of the q. x undulata complex (fagaceae, subgenus quercus) |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/795 |
| work_keys_str_mv | AT spellenbergrichard quercusleseuriasouthernmemberoftheqxundulatacomplexfagaceaesubgenusquercus AT spellenbergrichard quercuslesueuriunmiembromeridionaldelcomplejodeqxundulatafagaceaesubgeneroquercus |
