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| Amarilla,Leonardo D; Chiapella,Jorge O; Nagahama,Nicolás; Anton,Ana M. |
| Munroa is a morphologically heterogeneous American genus of grasses, including five species with disjunct distribution in North and South America. Dasyochloa is a monotypic grass genus, common in western North America, with a controversial taxonomic position, because it has been alternatively included in Erioneuron, Koeleria, Triodia, and Uralepis. We evaluated the relationship of Dasyochloa with Munroa using a phylogenetic analysis of qualitative and quantitative morphological data. Dasyochloa was not supported as an independent genus from Munroa, as Dasyochloa and Munroa species formed a monophyletic group defined by seven synapomorphies. On this basis, we transfer Dasyochloa to Munroa, and propose the new combination M. pulchella together with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: America; Amphitropical distribution; Chloridoideae; Dasyochloa; Munroa; Phylogeny; Taxonomy. |
| Ano: 2013 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932013000200006 |
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| Gradstein, S.R.; Pócs, T.; Váňa, J.. |
| An increasingly large number of macrodisjunct species is emerging from recent literature dealing with taxonomy and floristics of tropical bryophytes. This paper reviews present knowledge concerning Afro-American disjunctions in Hepaticae and seeks to interprete the data in the light of current phytogeographical theory. Numerous new floristic records and range extensions are given and some taxonomic novelties are proposed. For 35 Afro-American species known three main distribution types are recognized, each further subdivided: Tropical Afro-American (lowland, montane and the alpine element), Subtropical-Mediterranean (southern, wide element) and Temperate-Subantarctic (southern, wide element). Most species belong to Jungermanniales except for the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Africa; America; Disjunction; Dispersal; Hepaticae; Plate tectonics; Phytogeography.; Taxonomy; Vicariants. |
| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/535250 |
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| Santos-Neto,José Francisco; Ferreira,Viviane Matos; Feitosa,Caroline Alves; Martinez-Silveira,Martha Silvia; Campos,Leila Carvalho. |
| Abstract Neisseria meningitidis is a bacterium that colonizes the human nasopharynx and is transmitted by respiratory droplets from asymptomatic or symptomatic carriers. Occasionally, the pathogen invades the mucosa and enters the bloodstream, causing invasive meningococcal disease, a life-threatening infection. While meningococcal colonization is the first step in the development of invasive disease, the risk factors that predict progression from asymptomatic to symptomatic status are not well-known. The present report aimed to describe the prevalence of N. meningitidis carriers throughout the Americas, emphasizing the risk factors associated with carrier status, as well as the most prevalent serogroups in each studied population. We conducted a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neisseria meningitidis; Carrier; America; Epidemiology; Vaccine. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000400254 |
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