Results 1 to 10 of about 5,480 (147)

The scaly tree ferns (Cyatheaceae-Polypodiopsida) of Brazil [PDF]

open access: yesActa Botanica Brasilica, 2016
A synopsis of all scaly tree fern species (Cyatheaceae) occurring in Brazil is presented. We recognize 51 species in three genera [Sphaeropteris one species, Alsophila four species (one subspecies, two varieties), and Cyathea 45 species (one variety ...
Anna Weigand, Marcus Lehnert
exaly   +6 more sources

Nephrolepis (Lomariopsidaceae - Polypodiopsida) na Amazônia brasileira [PDF]

open access: yesRodriguésia, 2016
As espécies de Nephrolepis , segundo especialistas, são consideradas confusas do ponto de vista taxonômico, principalmente quanto aos caracteres morfológicos usados para definir os táxons restritos ao continente americano. No total, o gênero apresenta 19
Sebastião Maciel
doaj   +3 more sources

Aspleniaceae (Polypodiopsida) in the state of Mato Grosso, Brazil

open access: yesRodriguésia, 2023
We present a floristic-taxonomic survey of the species of Aspleniaceae in Mato Grosso as part of a series on the flora of lycophytes and ferns in this state. The study is based on an analysis of national and foreign herbaria specimens.
Lana da Silva Sylvestre   +2 more
doaj   +3 more sources

Dennstaedtiaceae (Polypodiopsida) no estado de Minas Gerais, Brasil [PDF]

open access: yesRodriguésia, 2011
Resumo Dennstaedtiaceae Pic. Serm.sensu lato é formada por cerca de 20 gêneros e 175 espécies. A família é caracterizada pelo caule ereto, raramente arborescente, curto a longo-reptante, com tricomas e/ou escamas, folhas geralmente pinadas, raro simples,
Francine Costa Assis, Alexandre Salino
doaj   +3 more sources

Miscellaneous notes on the fern family Blechnaceae (Polypodiopsida) from Tropical America [PDF]

open access: yesRodriguesia
We present here new discoveries in Blechnaceae (Polypodiopsida). There are new records in Austroblechnum, Blechnum, Cranfillia, and Parablechnum for different political units and areas of the Neotropics.
André Luís de Gasper   +1 more
exaly   +3 more sources

Notas nomenclaturais em Aspleniaceae (Polypodiopsida) ocorrentes no Brasil [PDF]

open access: yesRodriguésia, 2010
Resumo Como parte do estudo taxonômico das Aspleniaceae da flora brasileira, são designados nove lectótipos e propostos sete sinônimos novos. É apresentada uma combinação nova, Asplenium balansae (Baker) Sylvestre e duas mudanças de status, Asplenium ...
Lana da Silva Sylvestre
doaj   +3 more sources

Weedy ferns (Polypodiopsida) in Argentina: diversity, distribution and impact on human activities and ecosystems [PDF]

open access: yesAnais Da Academia Brasileira De Ciencias, 2020
Currently, in Argentina 368 species of true ferns (i.e. Polypodiopsida class) are distributed throughout the country, however, only four of them have been mentioned until now as weeds and ruderal species.
Diego Germán Gutiérrez   +2 more
exaly   +3 more sources

La familia Gleicheniaceae (Polypodiopsida) en Argentina y Paraguay

open access: yesGayana: Botanica, 2023
Se presenta un estudio de la familia Gleicheniaceae en Argentina y Paraguay, abarcando aspectos taxonómicos, morfológicos y de distribución. Se revisaron ocho herbarios de ambos países y especímenes tipo digitales.
Saúl Páez, Esteban I. Meza-Torres
doaj   +3 more sources

Unraveling the Parablechnum cordatum (Blechnaceae: Polypodiopsida) complex puzzle [PDF]

open access: yesActa Botânica Brasílica
Parablechnum cordatum (Blechnaceae) exhibits significant morphological variability, with many species considered as its synonyms, and is treated as a species complex by several authors. In this study, we offer a comprehensive revision of the taxon and an
Giesta Maria Olmedo Machado   +1 more
doaj   +2 more sources

Morphological and molecular evidence reject conspecificity of Malagasy and Mascarene Parablechnum (Polypodiopsida, Blechnaceae) [PDF]

open access: yesPhytoKeys, 2022
Under the current treatment of the Blechnaceae, only one species of the fern genus Parablechnum is recognised in the western Indian Ocean, often referred to as P. marginatum. Two varieties are currently recognised within it: a type variety present in the
Sonia Molino   +3 more
doaj   +8 more sources

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