Browsing by Subject "phylogeny"
Now showing items 1-15 of 15
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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 worldwide phylogeny of Adiantum (Pteridaceae) reveals remarkable convergent evolution in leaf blade architecture
(Taxon, 2018-06-01)© International Association for Plant Taxonomy (IAPT) 2018, All rights reserved. Adiantum is among the most distinctive and easily recognized leptosporangiate fern genera. Despite encompassing an astonishing range of leaf ... -
Application of Phylogenetic Analysis in Cancer Evolution
(2018)Cancer is a major threat to human health and results in 1 in 6 deaths globally. Despite an extraordinary amount of effort and money spent, eradication or control of advanced disease has not yet been achieved. Understanding ... -
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, ... -
Biogeographic analysis of the woody plants of the Southern Appalachians: Implications for the origins of a regional flora.
(Am J Bot, 2015-05)PREMISE OF THE STUDY: We investigated the origins of 252 Southern Appalachian woody species representing 158 clades to analyze larger patterns of biogeographic connectivity around the northern hemisphere. We tested biogeographic ... -
Evolution of Edaphic Ecology in Ceanothus (Rhamnaceae)
(2011)Edaphic factors--those pertaining to the substrate or soil--are thought to play an important role in the diversification of flowering plants. Although edaphic factors are widely interpreted as causal agents in plant ... -
Genomic Insights Into the Lichen Symbiosis: <italic>Cladonia grayi</italic> as a Model Lichen
(2011)Lichens are symbioses between a fungus and a photosynthesizing partner such as a green alga or a cyanobacterium. Unlike mycorrhizal or rhizobial symbioses, the lichen symbiosis is not well understood either morphologically ... -
Molecular phylogenetic relationships and morphological evolution in the heterosporous fern genus Marsilea
(Systematic Botany, 2007-01-01)Using six plastid regions, we present a phylogeny for 26 species of the heterosporous fern genus Marsilea. Two well-supported groups within Marsilea are identified. Group I includes two subgroups, and is relatively species-poor. ... -
Phylogenetic relationships and evolution of extant horsetails, Equisetum, based on chloroplast DNA sequence data (rbcL and trnL-F)
(International Journal of Plant Sciences, 2003-01-01)Equisetum is a small and morphologically distinct genus with a rich fossil record. Two subgenera have been recognized based principally on stomatal position and stem branching: subg. Equisetum (eight species; superficial ... -
Phylogenetic relationships of the enigmatic fern families Hymenophyllopsidaceae and Lophosoriaceae: Evidence from rbcL nucleotide sequences
(Plant Systematics and Evolution, 1999-01-01)Nucleotide sequences from rbcL were used to infer relationships of Lophosoriaceae and Hymenophyllopsidaceae. The phylogenetic positions of these two monotypic fern families have been debated, and neither group had been included ... -
Phylogeny of Marsileaceous Ferns and Relationships of the Fossil Hydropteris pinnata Reconsidered.
(International journal of plant sciences, 1999-09)Recent phylogenetic studies have provided compelling evidence that confirms the once disputed hypothesis of monophyly for heterosporous leptosporangiate ferns (Marsileaceae and Salviniaceae). Hypotheses for relationships ... -
rbcL data reveal two monophyletic groups of filmy ferns (Filicopsida: Hymenophyllaceae).
(American journal of botany, 2001-06)The "filmy fern" family, Hymenophyllaceae, is traditionally partitioned into two principal genera, Trichomanes s.l. (sensu lato) and Hymenophyllum s.l., based upon sorus shape characters. This basic split in the family has ... -
rbcL phylogeny of the fern genus Trichomanes (Hymenophyllaceae), with special reference to Neotropical taxa
(International Journal of Plant Sciences, 2003-01-01)In order to estimate evolutionary relationships within the filmy fern genus Trichomanes (Hymenophyllaceae), we performed a phylogenetic analysis using rbcL nucleotide data from 46 species of Trichomanes belonging to all ... -
Species relationships and farina evolution in the cheilanthoid fern genus Argyrochosma (Pteridaceae)
(Systematic Botany, 2011-07-01)Convergent evolution driven by adaptation to arid habitats has made it difficult to identify monophyletic taxa in the cheilanthoid ferns. Dependence on distinctive, but potentially homoplastic characters, to define major ... -
Sympatric parallel diversification of major oak clades in the Americas and the origins of Mexican species diversity.
(New Phytol, 2017-09-18)Oaks (Quercus, Fagaceae) are the dominant tree genus of North America in species number and biomass, and Mexico is a global center of oak diversity. Understanding the origins of oak diversity is key to understanding biodiversity ...
