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  • 1
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    On the 80th birthday of Paul J.M. Maas (2019)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (2212-1676) vol.64 (2019) p.i
    Details
    Publication Date: 2019-03-04
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
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  • 2
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    Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae) (2015)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.60 (2015) nr.1 p.1
    Details
    Publication Date: 2016-01-05
    Description: 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 notes. For all species distribution maps are made. A complete identification list with all exsiccatae studied, an index to vernacular names and an index of scientific names is included at the end.
    Keywords: Annonaceae ; chemistry ; descriptions ; flower biology and pollination ; Guatteria ; Guatteriella ; Guatteriopsis ; Heteropetalum ; history ; molecular studies ; morphology ; Neotropics ; palynology ; phylogeny ; taxonomy ; vernacular names
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
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  • 3
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    Assessment of age and greenness of herbarium specimens as predictors for successful extraction and amplification of DNA (2008)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.53 (2008) nr.2 p.407
    Details
    Publication Date: 2015-03-06
    Description: 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 shows that age and greenness of leaves are unreliable indicators of extraction and amplification success, although together they can have limited usefulness. Furthermore, we found that the amount of extracted DNA from herbarium specimens decreases with c. 1% per year in age of the specimens. Therefore, researchers sometimes should refrain from using old rare specimens because chances of success are unpredictable and precious herbarium material might be wasted. The uncritical use of indicators such as age or leaf colour is therefore not recommendable. Furthermore, botanists should annotate how specimens were collected and dried because this information is essential for successful DNA extraction. Hopefully, similar studies will be reported in order to identify the best approaches to extract DNA from herbarium specimens.
    Keywords: best laboratory practice ; herbarium specimen collection and selection ; Guatteria ; Zehneria ; Rauwolf herbarium
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
    Location Call Number Limitation Availability
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  • 4
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    On the 80th birthday of Paul J.M. Maas (2019)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 64, pp. i-ii
    Details
    Publication Date: 2024-01-12
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 5
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    WODAN: de invloed van verspreidings- en vestigingsmogelijkheden op het ontstaan van biodiversiteit (2008)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 33 no. 2, pp. 59-60
    Details
    Publication Date: 2024-01-12
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 6
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    Increasing diversity in the species-rich genus Guatteria (Annonaceae) (2008)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 53 no. 3, pp. 467-514
    Details
    Publication Date: 2024-01-12
    Description: 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 Amap\xc3\xa1 in Brazil (Northern South America) was found and described herein.
    Keywords: Annonaceae ; Guatteria ; tropical South America ; French Guiana ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 7
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    Seven taxonomic discoveries in Annonaceae from south-eastern Central America (2006)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 51 no. 2, pp. 199-220
    Details
    Publication Date: 2024-01-12
    Description: 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.
    Keywords: Annonaceae ; Desmopsis ; Guatteria ; Pseudomalmea ; Costa Rica ; Panama ; endemics
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Limitation Availability
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  • 8
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    Assessment of age and greenness of herbarium specimens as predictors for successful extraction and amplification of DNA (2008)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 53 no. 2, pp. 407-428
    Details
    Publication Date: 2024-01-12
    Description: 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. \nHere 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 shows that age and greenness of leaves are unreliable indicators of extraction and amplification success, although together they can have limited usefulness. Furthermore, we found that the amount of extracted DNA from herbarium specimens decreases with c. 1% per year in age of the specimens. Therefore, researchers sometimes should refrain from using old rare specimens because chances of success are unpredictable and precious herbarium material might be wasted. The uncritical use of indicators such as age or leaf colour is therefore not recommendable. Furthermore, botanists should annotate how specimens were collected and dried because this information is essential for successful DNA extraction. Hopefully, similar studies will be reported in order to identify the best approaches to extract DNA from herbarium specimens.
    Keywords: best laboratory practice ; herbarium specimen collection and selection ; Guatteria ; Zehneria ; Rauwolf herbarium
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 9
    facet.materialart.
    Unknown
    Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae) (2015)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 60 no. 1, pp. 1-219
    Details
    Publication Date: 2024-01-12
    Description: 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 notes. For all species distribution \nmaps are made. A complete identification list with all exsiccatae studied, an index to vernacular names and an index of scientific names is included at the end.
    Keywords: Annonaceae ; chemistry ; descriptions ; flower biology and pollination ; Guatteria ; Guatteriella ; Guatteriopsis ; Heteropetalum ; history ; molecular studies ; morphology ; Neotropics ; palynology ; phylogeny ; taxonomy ; vernacular names
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
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