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16 results on '"Xavier-Leite, Amanda Barreto"'

11. New species of Arthoniales from NE Brazil

Author

MENEZES, Aline Anjos, primary, de LIMA, Edvaneide Leandro, additional, XAVIER-LEITE, Amanda Barreto, additional, MAIA, Leonor Costa, additional, APTROOT, André, additional, and CÁCERES, Marcela Eugenia da Silva, additional

Published
2013
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13. Twelve New Species Reveal Cryptic Diversification in Foliicolous Lichens of Strigula s.lat. (Strigulales , Ascomycota).

Author

Jiang, Shu-Hua, Lücking, Robert, Liu, Hua-Jie, Wei, Xin-Li, Xavier-Leite, Amanda Barreto, Portilla, Carlos Viñas, Ren, Qiang, and Wei, Jiang-Chun

Subjects
LICHENS, ASCOMYCETES, MOLECULAR phylogeny, BIOMARKERS, FUNGI diversity
Abstract

We employed a molecular phylogenetic approach using five markers (ITS, nuSSU, nuLSU, TEF1-α, and RPB2) to assess potential cryptic speciation in foliicolous members of Strigula s.lat. (Strigulaceae), including the recently segregated genera Phylloporis, Puiggariella, Raciborskiella, Racoplaca, and Serusiauxiella, from tropical areas in Asia, with selected materials from the Neotropics as reference. On the basis of combined molecular and phenotypic datasets, two new species of Racoplaca and 10 new species of Strigula s.str. are described: Racoplaca macrospora sp. nov., R. maculatoides sp. nov., Strigula guangdongensis sp. nov., S. intermedia sp. nov., S. laevis sp. nov., S. microcarpa sp. nov., S. pseudoantillarum sp. nov., S. pseudosubtilissima sp. nov., S. pycnoradians sp. nov., S. sinoconcreta sp. nov., S. stenoloba sp. nov., and S. subtilissimoides sp. nov. In addition, we propose the new combination Phylloporis palmae comb. nov. (≡ =Manaustrum palmae) and we validate the earlier combination Racoplaca melanobapha comb. nov. (≡ Verrucaria melanobapha; Strigula melanobapha). Our data clearly indicate a considerable degree of cryptic diversification in foliicolous representatives of Strigula s.lat., particularly in the presumably widespread taxa Strigula antillarum, S. concreta, S. nitidula, and S. smaragdula. Given that these phylogenetic revisions are thus far limited to few regions, we predict that our findings only represent the proverbial tip of the iceberg in this group of lichenized fungi. [ABSTRACT FROM AUTHOR]

Published
2022
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14. New species of Polymeridium from Brazil expand the range of known morphological variation within the genus.

Author

APTROOT, André, MENEZES, Aline Anjos, de LIMA, Edvaneide Leandro, XAVIER-LEITE, Amanda Barreto, and CÁCERES, Marcela Eugenia da Silva

Subjects
FUNGI classification, FUNGAL morphology, ASCOSPORES, THALLUS
Abstract

Five new species of the genus Polymeridium are described from Brazil. All exhibit at least one character that was previously unknown in the genus: P. corticatum has a corticate thallus and 2 ascospores per ascus, P. immersum has the ascomata deeply immersed in the bark under the thallus, P. isohypocrellinum has a red, KOH+ green pigment (iso-hypocrellin) in the ostiole, P. julelloides has short and broad muriform (Julella-like) ascospores, and P. paraproponens has ascomata in groups of two to three. Brazil is clearly the centre of diversity of the genus. Iso-hypocrellin is a new substance for the genus. [ABSTRACT FROM PUBLISHER]

Published
2013
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15. Three new Stirtoniaspecies (Arthoniales) from Reserva Muralha, NE Brazil, with a worldwide key to the species

Author

Xavier-Leite, Amanda Barreto, Menezes, Aline Anjos, de Oliveira Andrade, Adanilza, Aptroot, André, and da Silva Cáceres, Marcela Eugenia

Abstract

Three new species are described in the small genus Stirtonia, all from NE Brazil, and all from one reserve of Caatinga forest in Paraíba. Stirtonia microsporais characterized by the small macrocephalic ascospores, S. nitidaby the smooth thallus even covering the ascigerous areas and S. niveaby the pruinose, elongated ascigerous areas. This is an unexpected diversity of this mostly palaeotropical genus in the neotropics. A revised worldwide key to the known species is presented.

Published
2014
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16. Coenogonium chloroticum(Ascomycota: Coenogoniaceae), a new corticolous lichen species from Mata do Pau-Ferro, in Paraíba, NE Brazil

Author

Xavier-Leite, Amanda Barreto, Menezes, Aline Anjos, Aptroot, André, and da Silva Cáceres, Marcela Eugenia

Abstract

The new species Coenogonium chloroticumis described from a tree that also supports another Coenogoniumspecies that was not known from Brazil before, viz. C. siquirrensef. denticulatum. This new species was collected during an ecological study about the corticolous microlichens in high altitude rainforest enclaves in the middle of Caatinga vegetation, known as Brejo de Altitudes, in Paraiba State, NE Brazil.

Published
2014

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