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Registros recuperados: 5
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Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae) Naturalis
Maas, P.J.M.; Westra, L.Y.T.; Guerrero, S. Arias; Lobão, A.Q.; Scharf, U.; Zamora, N.A.; Erkens, R.H.J..
A taxonomic revision of the genus Guatteria, including the former genera Guatteriella, Guatteriopsis and Heteropetalum is given. Within the genus Guatteria 177 species are recognized, 25 of which are new. Included are chapters on the history of the taxonomy of the genus, morphology, wood anatomy, karyology, palynology, chemistry, flower biology and pollination, dispersal, distribution and ecology, phylogeny and molecular studies, conservation, and uses. A synoptical key to all species is included, as well as two dichotomous keys, one for the species of Central America and Mexico, and one for the species of NE, E and SE Brazil. The species treatments include descriptions, full synonymy, geographical and ecological notes, vernacular names and taxonomic...
Tipo: Article / Letter to the editor Palavras-chave: Annonaceae; Chemistry; Descriptions; Flower biology and pollination; Guatteria; Guatteriella; Guatteriopsis; Heteropetalum; History; Molecular studies; Morphology; Neotropics; Palynology; Phylogeny; Taxonomy; Vernacular names.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/588490
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Assessment of age and greenness of herbarium specimens as predictors for successful extraction and amplification of DNA Naturalis
Erkens, R.H.J.; Cross, H.; Maas, J.W.; Hoenselaar, K.; Chatrou, L.W..
Age and the greenness of leaves have been frequently used as indicators for selecting herbarium specimens for molecular studies. Although plant DNA extraction and amplification have been common lab procedures for the past 20 years, no studies specifically investigated the success of these indicators. Here the predictive value of age and the greenness for extraction and amplification success is assessed, using a large number of herbarium specimens from different plant groups. The investigation of these indicators is important because herbarium material is a precious commodity, and is often the only remaining floral record of now extinct ecosystems. In cases where little leaf material is available, most researchers still attempt to extract DNA. This study...
Tipo: Article / Letter to the editor Palavras-chave: Best laboratory practice; Herbarium specimen collection and selection; Guatteria; Zehneria; Rauwolf herbarium.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/525744
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On the 80th birthday of Paul J.M. Maas Naturalis
Erkens, R.H.J.; Steege, H. ter.
Tipo: Article / Letter to the editor
Ano: 2019 URL: http://www.repository.naturalis.nl/record/680150
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Increasing diversity in the species-rich genus Guatteria (Annonaceae) Naturalis
Erkens, R.H.J.; Westra, L.Y.Th.; Maas, P.J.M..
During a taxonomic treatment of Annonaceae for the Flora of the Guianas project, an unusual new species of Guatteria Ruiz & Pav., G. anteridifera from French Guiana and Amapá in Brazil (Northern South America) was found and described herein.
Tipo: Article / Letter to the editor Palavras-chave: Annonaceae; Guatteria; Tropical South America; French Guiana; Taxonomy.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/525906
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Seven taxonomic discoveries in Annonaceae from south-eastern Central America Naturalis
Erkens, R.H.J.; Maas, P.J.M.; Chatrou, L.W.; Schatz, G.E.; Zamora, N..
During fieldwork in Costa Rica and Panama five undescribed species of Guatteria and one new species of Desmopsis were collected and are described here. Additionally, a poorly known species of Pseudomalmea is described.
Tipo: Article / Letter to the editor Palavras-chave: Annonaceae; Desmopsis; Guatteria; Pseudomalmea; Costa Rica; Panama; Endemics.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/525819
Registros recuperados: 5
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