Taxonomic revision of the genus Wurdastom (Melastomataceae: Cyphostyleae)
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| Format: | Artículo científico |
| Language: | en |
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Instituto de Ecología, A.C.
2020
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| author | Humberto Mendoza-Cifuentes |
| author_facet | Humberto Mendoza-Cifuentes |
| contents | Taxonomic revision of the genus Wurdastom (Melastomataceae: Cyphostyleae) Humberto Mendoza-Cifuentes Biología Taxonomy Allomaieta Alloneuron Neotropics Cyphostyleae Background and Aims Wurdastom is a little-known neotropical genus, which is poorly represented in herbarium collections. A historical summary, discussion about the tribal position, taxonomic review, and a conservation assessment of each species of the genus was carried out.Methods Wurdastom specimens of 17 herbarium collections from Colombia (CAUP, COAH, COL, CUVC, FMB, HUQ, PSO, UDBC, UPTC, VALLE), Ecuador (QCA, QCNE), and the United States of America (CAS, F, MO, NY, US) were reviewed, and relevant type collections available at JSTOR Global Plantswere consulted. An identification key, descriptions, illustrations and distribution maps for each species were developed. IUCN guidelines and criterio were used for conservation assessments of each species.Key results In total, 52 Wurdastom collections were found in the revised herbaria. A new species from Colombia is described and new isotypes from the VALLE Herbarium are reported here for the first time. Wurdastom is a small genus of trees and shrubs from central-west Colombia to northern Peru where it grows in Andean and humid lowland tropical forests. The genus, which is assigned to the tribe Cyphostyleae, is characterized by the acrodromous venation, barbellate trichomes on vegetative parts and inflorescences, multiflorous thyrsoid or pleiothyrsoid inflorescence, haplostemonous flowers, petals ≤1 cm long, inferior ovaries, and capsular fruits.Conclusions Wurdastom includes eight neotropical species, most of them with restricted distributions. One species is assessed here as Threatened (W. sneidernii), two as Vulnerable (W. cuatrecasasii, W. dudleyi), and the rest are treated as Data Deficient. 2020 artículo científico 0187-7151 https://www.redalyc.org/articulo.oa?id=57466093045 https://www.redalyc.org/journal/574/57466093045/ https://www.redalyc.org/journal/574/57466093045/html/ https://www.redalyc.org/journal/574/57466093045/57466093045.epub https://www.redalyc.org/journal/574/57466093045/movil 10.21829/abm127.2020.1642 en http://www.redalyc.org/revista.oa?id=574 Acta Botanica Mexicana application/pdf Instituto de Ecología, A.C. Acta Botanica Mexicana (México) Num.127 |
| format | Artículo científico |
| id | redalyc_57466093045 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Instituto de Ecología, A.C. |
| spellingShingle | Taxonomic revision of the genus Wurdastom (Melastomataceae: Cyphostyleae) Humberto Mendoza-Cifuentes Biología Taxonomy Allomaieta Alloneuron Neotropics Cyphostyleae Taxonomic revision of the genus Wurdastom (Melastomataceae: Cyphostyleae) Humberto Mendoza-Cifuentes Biología Taxonomy Allomaieta Alloneuron Neotropics Cyphostyleae Background and Aims Wurdastom is a little-known neotropical genus, which is poorly represented in herbarium collections. A historical summary, discussion about the tribal position, taxonomic review, and a conservation assessment of each species of the genus was carried out.Methods Wurdastom specimens of 17 herbarium collections from Colombia (CAUP, COAH, COL, CUVC, FMB, HUQ, PSO, UDBC, UPTC, VALLE), Ecuador (QCA, QCNE), and the United States of America (CAS, F, MO, NY, US) were reviewed, and relevant type collections available at JSTOR Global Plantswere consulted. An identification key, descriptions, illustrations and distribution maps for each species were developed. IUCN guidelines and criterio were used for conservation assessments of each species.Key results In total, 52 Wurdastom collections were found in the revised herbaria. A new species from Colombia is described and new isotypes from the VALLE Herbarium are reported here for the first time. Wurdastom is a small genus of trees and shrubs from central-west Colombia to northern Peru where it grows in Andean and humid lowland tropical forests. The genus, which is assigned to the tribe Cyphostyleae, is characterized by the acrodromous venation, barbellate trichomes on vegetative parts and inflorescences, multiflorous thyrsoid or pleiothyrsoid inflorescence, haplostemonous flowers, petals ≤1 cm long, inferior ovaries, and capsular fruits.Conclusions Wurdastom includes eight neotropical species, most of them with restricted distributions. One species is assessed here as Threatened (W. sneidernii), two as Vulnerable (W. cuatrecasasii, W. dudleyi), and the rest are treated as Data Deficient. 2020 artículo científico 0187-7151 https://www.redalyc.org/articulo.oa?id=57466093045 https://www.redalyc.org/journal/574/57466093045/ https://www.redalyc.org/journal/574/57466093045/html/ https://www.redalyc.org/journal/574/57466093045/57466093045.epub https://www.redalyc.org/journal/574/57466093045/movil 10.21829/abm127.2020.1642 en http://www.redalyc.org/revista.oa?id=574 Acta Botanica Mexicana application/pdf Instituto de Ecología, A.C. Acta Botanica Mexicana (México) Num.127 |
| title | Taxonomic revision of the genus Wurdastom (Melastomataceae: Cyphostyleae) |
| topic | Biología Taxonomy Allomaieta Alloneuron Neotropics Cyphostyleae |
| url | https://www.redalyc.org/articulo.oa?id=57466093045 https://www.redalyc.org/journal/574/57466093045/ https://www.redalyc.org/journal/574/57466093045/html/ https://www.redalyc.org/journal/574/57466093045/57466093045.epub https://www.redalyc.org/journal/574/57466093045/movil |