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Browsing by Author "Pryer, KM"
Now showing items 1-20 of 89
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A classification for extant ferns
(Taxon, 2006-01-01)We present a revised classification for extant ferns, with emphasis on ordinal and familial ranks, and a synopsis of included genera. Our classification reflects recently published phylogenetic hypotheses based ... -
A first glimpse at genes important to the Azolla–Nostoc symbiosis
(Symbiosis, 2019-01-01)© 2019, Springer Nature B.V. Azolla is a small genus of diminutive aquatic ferns with a surprisingly vast potential to benefit the environment and agriculture, as well as to provide insight into the evolution of ... -
A molecular phylogeny of scaly tree ferns (Cyatheaceae).
(American journal of botany, 2007-05)Tree ferns recently were identified as the closest sister group to the hyperdiverse clade of ferns, the polypods. Although most of the 600 species of tree ferns are arborescent, the group encompasses a wide range of morphological ... -
A molecular phylogeny of the fern family Pteridaceae: assessing overall relationships and the affinities of previously unsampled genera.
(Molecular phylogenetics and evolution, 2007-09)The monophyletic Pteridaceae accounts for roughly 10% of extant fern diversity and occupies an unusually broad range of ecological niches, including terrestrial, epiphytic, xeric-adapted rupestral, and even aquatic species. ... -
A novel chloroplast gene reported for flagellate plants.
(American journal of botany, 2018-01)PREMISE OF THE STUDY:Gene space in plant plastid genomes is well characterized and annotated, yet we discovered an unrecognized open reading frame (ORF) in the fern lineage that is conserved across flagellate plants. METHODS:We ... -
A plastid phylogeny of the cosmopolitan fern family cystopteridaceae (Polypodiopsida)
(Systematic Botany, 2013-06-01)Among the novel results of recent molecular phylogenetic analyses are the unexpectedly close evolutionary relationships of the genera Acystopteris, Cystopteris, and Gymnocarpium, and the phylogenetic isolation of these genera ... -
A revised family-level classification for eupolypod II ferns (Polypodiidae: Polypodiales)
(Taxon, 2012-01-01)We present a family-level classification for the eupolypod II clade of leptosporangiate ferns, one of the two major lineages within the Eupolypods, and one of the few parts of the fern tree of life where family-level ... -
A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data
(Taxon, 2016-08-01)© International Association for Plant Taxonomy (IAPT) 2016. Vittarioid ferns compose a well-supported clade of 100-130 species of highly simplified epiphytes in the family Pteridaceae. Generic circumscriptions within the ... -
A step-by-step protocol for meiotic chromosome counts in flowering plants: A powerful and economical technique revisited.
(Applications in plant sciences, 2020-04-23)Premise:Counting chromosomes is a fundamental botanical technique, yet it is often intimidating and increasingly sidestepped. Once mastered, the basic protocol can be applied to a broad range of taxa and research questions. ... -
A synopsis of the genus Sanicula (Apiaceae) in eastern Canada
(Canadian Journal of Botany, 1989-01-01)Four species and 2 varieties of these native woodland umbellifers are recognized. A key to the taxa, comparative descriptions of diagnostic characters, and notes on the taxonomy, distribution, habitat, and rare status are ... -
A Unified Approach to Taxonomic Delimitation in the Fern Genus Pentagramma (Pteridaceae)
(Systematic Botany, 2015-01-01)© Copyright 2015 by the American Society of Plant Taxonomists.The native goldback and silverback ferns of western North America, composing the genus Pentagramma, are phylogenetically isolated within the xeric-adapted cheilanthoid ... -
Adiantumshastense, a new species of maidenhair fern from California.
(PhytoKeys, 2015)A new species of Adiantum is described from California. This species is endemic to northern California and is currently known only from Shasta County. We describe its discovery after first being collected over a century ... -
Applying Machine Learning to Investigate Long Term Insect-Plant Interactions Preserved on Digitized Herbarium Specimens
(Applications in plant sciences, 2020)<jats:title>Abstract</jats:title><jats:sec><jats:title>Premise of the study</jats:title><jats:p>Despite the economic importance of insect damage to plants, long-term data documenting changes in insect damage (‘herbivory’) ... -
Are there too many fern genera?
(Taxon, 2018-06-01) -
Assessing phylogenetic relationships in extant heterosporous ferns (Salviniales), with a focus on Pilularia and Salvinia
(Botanical Journal of the Linnean Society, 2008-08-01)Heterosporous ferns (Salviniales) are a group of approximately 70 species that produce two types of spores (megaspores and microspores). Earlier broad-scale phylogenetic studies on the order typically focused on one or, ... -
Baja: A New Monospecific Genus Segregated from Cheilanthes s. l. (Pteridaceae)
(Systematic Botany, 2019-09-06) -
Comparative morphology of reproductive structures in heterosporous water ferns and a reevaluation of the sporocarp
(International Journal of Plant Sciences, 2006-07-01)Heterosporous water ferns (Marsileaceae and Salviniaceae) are the only extant group of plants to have evolved heterospory since the Paleozoic. These ferns possess unusual reproductive structures traditionally termed "sporocarps." ... -
Crowdfunding the Azolla fern genome project: a grassroots approach
(GigaScience, 2014) -
Cyanobacterial ribosomal RNA genes with multiple, endonuclease-encoding group I introns.
(BMC evolutionary biology, 2007-09-08)Group I introns are one of the four major classes of introns as defined by their distinct splicing mechanisms. Because they catalyze their own removal from precursor transcripts, group I introns are referred to as autocatalytic ...
