Results 161 to 170 of about 2,735 (202)

Polystichum weimingii sp. nov. (sect. Metapolystichum, Dryopteridaceae) from Southern Yunnan, China [PDF]

open access: yesSystematic Botany, 2009
A new fern species, Polystichum weimingii (sect. Metapolystichum, Dryopteridaceae), is described from Southern Yunnan, China. The new species is morphologically most similar to R discretum. Compared to P.
Li-Bing Zhang, Hai He, Zhang Li-Bing
exaly   +1 more source
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Flavonoid patterns in athyriaceae and dryopteridaceae

Biochemical Systematics and Ecology, 1978
Abstract Fifty-one fern species, representative of 11 genera of the Japanese Athyriaceae and Dryopteridaceae (21 species of 6 genera of the former and 30 species of 5 genera of the latter family) have been chemically surveyed for flavonoid glycosides in their fronds, and the results are discussed in connection with their taxonomy and the phylogeny.
exaly   +2 more sources

Megalastrum (Dryopteridaceae) in Central America

Kew Bulletin, 2010
Twenty-one species of Megalastrum are here recognised for Central America. A dichotomous indented key is given to identify the species, and each species is provided with a description, complete synonymy, discussion, specimens examined, and illustrations. Eight new species are described: Megalastrum apicale R. C. Moran & J. Prado, M. costipubens R.
Robbin C. Moran, Jefferson Prado
openaire   +1 more source

A New Species of Polystichum (Dryopteridaceae) to the Bulgarian Flora

Proceedings of the Bulgarian Academy of Sciences, 2023
The fern species Polystichum braunii (Dryopteridaceae) is reported for the first time for the Bulgarian flora. It was discovered in a beech forest on the northern slopes of Western Balkan Range, above Varshets town, Montana district. The nearest known locality is in SW Romania.
openaire   +1 more source

Megalastrum (Dryopteridaceae) in the West Indies

Brittonia, 2009
Seven species of Megalastrum have been generally recognized in the West Indies. In this treatment, we recognize nine species for the region, five of which are endemic. We describe a new species (M. angustum), make three new combinations (M. caribaeum, M. gilbertii, M.
Robbin C. Moran   +2 more
openaire   +1 more source

Conservation of rDNA inPolystichum (Dryopteridaceae)

Plant Systematics and Evolution, 1992
Restriction site variation in the nuclear 18S–25S ribosomal RNA genes (rDNA) was analyzed hierarchically in a species complex in the fern genusPolystichum. Two distinct rDNA repeat types were present in all individuals ofPolystichum examined. No variation was detected among individuals within a population ofP. munitum, among populations ofP.
P. S. Soltis, D. E. Soltis
openaire   +1 more source

Megalastrum (Dryopteridaceae) in Brazil, Paraguay, and Uruguay

open access: yesAmerican Fern Journal, 2009
Abstract We provide keys, descriptions, illustrations, full synonymies, maps, and a list of specimens examined for species of Megalastrum found in Brazil, Paraguay, and Uruguay. Eighteen species are recognized, including seven new ones: M. albidum, M. brevipubens, M. indusiatum, M. littorale, M. organense, M. retrorsum, and M. substrigosum. The species
Robbin C Moran   +2 more
exaly   +4 more sources

A plastid phylogeny of the fern genus Arachniodes (Dryopteridaceae)

Molecular Phylogenetics and Evolution, 2019
Arachniodes (Dryopteridaceae) is one of the most confusing and controversial fern genera in terms of its circumscription, nomenclature, and taxonomy. Estimates of species number range from 40 to 200. Previous molecular works included only 2-17 accessions representing 2-12 species of Arachniodes and allied genera, leaving most of the Asian species ...
Ngan Thi, Lu   +9 more
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Phylogeny of the Polybotryoid Fern Clade (Dryopteridaceae)

International Journal of Plant Sciences, 2015
Premise of research. The polybotryoid fern clade is completely Neotropical and consists of Cyclodium, Maxonia, Olfersia, Polybotrya, and Polystichopsis. It has never received a detailed phylogenetic analysis. We performed such an analysis to examine the relationships among species and genera and to map the evolution of their morphological and ...
Robbin C. Moran, Paulo H. Labiak
openaire   +1 more source

Monograph of the Elaphoglossum ciliatum group (Dryopteridaceae)

Brittonia, 2009
The Elaphoglossum ciliatum group was supported by a previous study as monophyletic on the basis of cpDNA sequence data. The present paper provides a monograph of this group. It includes keys, full synonymy, descriptions, specimens examined, index to collectors’ names and numbers, photographs, and distribution maps for all species.
Alejandra Vasco   +2 more
openaire   +1 more source

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