Two new taxa of <em>Clethra</em> (Clethraceae: sect. <em>Cuellaria</em>, ser. <em>Tomentosae</em>) from Honduras
Background: As part of the taxonomic revision of the genus Clethra in Central America, two new species from Honduras were discovered. The two new species described here have been confused mainly with C. lanata, C. mexicana and C. salvadorensis. Question: Are foliar trichomes useful to distinguish...
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| Format: | Article |
| Language: | English |
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Sociedad Botánica de México, A. C.
2022-05-01
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| Series: | Botanical Sciences |
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| Online Access: | https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/3092 |
| _version_ | 1811308055936106496 |
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| author | Luz María González-Villarreal |
| author_facet | Luz María González-Villarreal |
| author_sort | Luz María González-Villarreal |
| collection | DOAJ |
| description | Background: As part of the taxonomic revision of the genus Clethra in Central America, two new species from Honduras were discovered. The two new species described here have been confused mainly with C. lanata, C. mexicana and C. salvadorensis.
Question: Are foliar trichomes useful to distinguish species?
Taxon: Species of Clethra.
Study site: Central and southern mountain ranges of Honduras.
Methods: Relevant literature on Clethra was reviewed and specimens from six herbaria were examined. Type material from all morphologically similar species, as well as those taxa with which the two new species have previously been confused were compared.
Results: Clethra albertinae and C. standleyana are described and illustrated as new and endemic species from Honduras, both belong to ser. Tomentosae. Clethra albertinae is most closely related to C. licanioides, a species endemic to Guatemala, and C. standleyana is most closely related to C. nicaraguensis, a widespread species that occurs from Mexico (Chiapas) to Nicaragua. Based on the IUCN Red List a conservation assessment of Vulnerable and Endangered is recommended for both new species. An updated list and key to the nine species of Clethra for the flora of Honduras is proposed.
Conclusions: The foliar trichomes turned out to be diagnostic and in combination with characters of the inflorescences can used to separate of all Honduran species of Clethra. In Central America, Honduras is the third country with most species rich of this genus after Guatemala and Costa Rica.
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| first_indexed | 2024-04-13T09:16:30Z |
| format | Article |
| id | doaj.art-2d329de40bab4908a2775866ea1adcdf |
| institution | Directory Open Access Journal |
| issn | 2007-4298 2007-4476 |
| language | English |
| last_indexed | 2024-04-13T09:16:30Z |
| publishDate | 2022-05-01 |
| publisher | Sociedad Botánica de México, A. C. |
| record_format | Article |
| series | Botanical Sciences |
| spelling | doaj.art-2d329de40bab4908a2775866ea1adcdf2022-12-22T02:52:44ZengSociedad Botánica de México, A. C.Botanical Sciences2007-42982007-44762022-05-01100110.17129/botsci.3092Two new taxa of <em>Clethra</em> (Clethraceae: sect. <em>Cuellaria</em>, ser. <em>Tomentosae</em>) from HondurasLuz María González-Villarreal0Herbario IBUG (Luz María Villarreal de Puga) - Departamento de Botánica y Zoología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, JaliscoBackground: As part of the taxonomic revision of the genus Clethra in Central America, two new species from Honduras were discovered. The two new species described here have been confused mainly with C. lanata, C. mexicana and C. salvadorensis. Question: Are foliar trichomes useful to distinguish species? Taxon: Species of Clethra. Study site: Central and southern mountain ranges of Honduras. Methods: Relevant literature on Clethra was reviewed and specimens from six herbaria were examined. Type material from all morphologically similar species, as well as those taxa with which the two new species have previously been confused were compared. Results: Clethra albertinae and C. standleyana are described and illustrated as new and endemic species from Honduras, both belong to ser. Tomentosae. Clethra albertinae is most closely related to C. licanioides, a species endemic to Guatemala, and C. standleyana is most closely related to C. nicaraguensis, a widespread species that occurs from Mexico (Chiapas) to Nicaragua. Based on the IUCN Red List a conservation assessment of Vulnerable and Endangered is recommended for both new species. An updated list and key to the nine species of Clethra for the flora of Honduras is proposed. Conclusions: The foliar trichomes turned out to be diagnostic and in combination with characters of the inflorescences can used to separate of all Honduran species of Clethra. In Central America, Honduras is the third country with most species rich of this genus after Guatemala and Costa Rica. https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/3092EndemismMesoamericanew speciestaxonomyfoliar trichomes |
| spellingShingle | Luz María González-Villarreal Two new taxa of <em>Clethra</em> (Clethraceae: sect. <em>Cuellaria</em>, ser. <em>Tomentosae</em>) from Honduras Botanical Sciences Endemism Mesoamerica new species taxonomy foliar trichomes |
| title | Two new taxa of <em>Clethra</em> (Clethraceae: sect. <em>Cuellaria</em>, ser. <em>Tomentosae</em>) from Honduras |
| title_full | Two new taxa of <em>Clethra</em> (Clethraceae: sect. <em>Cuellaria</em>, ser. <em>Tomentosae</em>) from Honduras |
| title_fullStr | Two new taxa of <em>Clethra</em> (Clethraceae: sect. <em>Cuellaria</em>, ser. <em>Tomentosae</em>) from Honduras |
| title_full_unstemmed | Two new taxa of <em>Clethra</em> (Clethraceae: sect. <em>Cuellaria</em>, ser. <em>Tomentosae</em>) from Honduras |
| title_short | Two new taxa of <em>Clethra</em> (Clethraceae: sect. <em>Cuellaria</em>, ser. <em>Tomentosae</em>) from Honduras |
| title_sort | two new taxa of em clethra em clethraceae sect em cuellaria em ser em tomentosae em from honduras |
| topic | Endemism Mesoamerica new species taxonomy foliar trichomes |
| url | https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/3092 |
| work_keys_str_mv | AT luzmariagonzalezvillarreal twonewtaxaofemclethraemclethraceaesectemcuellariaemseremtomentosaeemfromhonduras |