Results 51 to 60 of about 5,514 (193)

Towards resolving the complete fern tree of life.

open access: yesPLoS ONE, 2011
In the past two decades, molecular systematic studies have revolutionized our understanding of the evolutionary history of ferns. The availability of large molecular data sets together with efficient computer algorithms, now enables us to reconstruct ...
Samuli Lehtonen
doaj   +1 more source

Complete plastid genomes from Ophioglossum californicum, Psilotum nudum, and Equisetum hyemale reveal an ancestral land plant genome structure and resolve the position of Equisetales among monilophytes

open access: yesBMC Evolutionary Biology, 2013
Background Plastid genome structure and content is remarkably conserved in land plants. This widespread conservation has facilitated taxon-rich phylogenetic analyses that have resolved organismal relationships among many land plant groups.
Grewe Felix   +4 more
doaj   +1 more source

Long‐term ecological responses of a lowland dipterocarp forest to climate changes and nutrient availability

open access: yesNew Phytologist, Volume 240, Issue 6, Page 2513-2529, December 2023., 2023
Summary Understanding the long‐term impact of projected climate change on tropical rainforests is critical given their central role in the Earth's system. Palaeoecological records can provide a valuable perspective on this problem. Here, we examine the effects of past climatic changes on the dominant forest type of Southeast Asia – lowland dipterocarp ...
Ana Prohaska   +5 more
wiley   +1 more source

Contribuições para a flora de samambaias da Serra dos Carajás, Pará, Brasil

open access: yesRodriguésia, 2019
Resumo Este estudo trata os táxons das famílias Athyriaceae, Lomariopsidaceae, Metaxyaceae e Saccolomataceae (Polypodiopsida) encontrados nas formações de Floresta Ombrófila Densa circunvizinhas às formações de canga da Serra dos Carajás, estado do Pará,
Lucas Vieira Lima   +4 more
doaj   +1 more source

Catálogo de las plantas vasculares de Chile

open access: yesGayana: Botanica, 2018
Se presenta un catálogo de las plantas vasculares que crecen en Chile. Está organizado por divisiones, Pteridophyta (Lycopodiopsida y Polypodiopsida), Pinophyta (Gnetopsida y Pinopsida) y Magnoliophyta (Liliopsida y Magnoliopsida), y dentro de cada ...
Roberto Rodriguez   +12 more
doaj   +1 more source

Do you know Cyathea divergens (Cyatheaceae-Polypodiopsida)?  [PDF]

open access: yesPhytotaxa, 2014
The Neotropical scaly tree fern Cyathea divergens is a paradigm of a variable species with a wide geographical range. Studies in herbaria and in the field reveal that C. divergens is less frequently collected and less variable than previously thought.
openaire   +1 more source

Palinomorfos del Holoceno en la cuenca alta del Río Lerma, Estado de México, México

open access: yesBotan‪ical Sciences, 2003
En los sedimentos de la laguna de Chignahuapan, Estado de México, México, se identificaron 96 palinomorfos. Se encontraron 8 taxa correspondientes a algas, un género y una familia tanto para Equisetopsida como para Lycopodiopsida, y 6 familias con 10 ...
Beatriz Ludlow-Wiechers   +2 more
doaj   +1 more source

Pteridophyte distribution of the Urals and adjacent areas: a dataset [PDF]

open access: yesBiodiversity Data Journal, 2021
Data on the species diversity and distribution of pteridophytes (lycophytes and ferns) in the Urals and adjacent areas are presented. The dataset includes 13,742 observations of two classes Lycopodiopsida and Polypodiopsida.
Denis Melnikov   +21 more
doaj   +3 more sources

Asplenium sylvaticum (Aspleniaceae), a new fern species from Yungas and Paraná forests, Neotropical region [PDF]

open access: yesAnais da Academia Brasileira de Ciências
A new species of Asplenium L. (Aspleniaceae) is described and illustrated. Asplenium sylvaticum is endemic of the Yungas and Paraná biogeographic provinces in the Southern Cone. The main diagnostic characters for this taxon are: apical pinnae with one to
MARCELO D. ARANA   +3 more
doaj   +1 more source

The first register of the weed fern Pteris cretica var. laeta (Pteridaceae) in central Argentina

open access: yesLilloa, 2020
Pteris cretica L. var. laeta is recorded for the first time in the Comechingones biogeographic province in central Argentina. This is the first record of P. cretica in central Argentina, and P. cretica var. laeta for the country. Until now Pteris cretica
Marcelo Daniel Arana   +3 more
doaj   +1 more source

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