scholarly journals How global biodiversity hotspots may go unrecognized: lessons from the North American Coastal Plain

2014 ◽  
Vol 21 (2) ◽  
pp. 236-244 ◽  
Author(s):  
Reed F. Noss ◽  
William J. Platt ◽  
Bruce A. Sorrie ◽  
Alan S. Weakley ◽  
D. Bruce Means ◽  
...  
Keyword(s):  
Coastal Plain ◽  
North American ◽  
Biodiversity Hotspots ◽  
The North ◽  
North American Coastal Plain ◽  
Global Biodiversity

scholarly journals Restriction-Site-Associated DNA Sequencing Reveals a CrypticViburnumSpecies on the North American Coastal Plain

2018 ◽  
Vol 68 (2) ◽  
pp. 187-203 ◽  
Author(s):  
Elizabeth L Spriggs ◽  
Deren A R Eaton ◽  
Patrick W Sweeney ◽  
Caroline Schlutius ◽  
Erika J Edwards ◽  
...  
Keyword(s):  
Dna Sequencing ◽  
Coastal Plain ◽  
North American ◽  
Restriction Site ◽  
The North ◽  
North American Coastal Plain

Population genetics, speciation, and hybridization in Dicerandra (Lamiaceae), a North American Coastal Plain endemic, and implications for conservation

2019 ◽  
Vol 20 (3) ◽  
pp. 531-543
Author(s):  
Adam C. Payton ◽  
Andre A. Naranjo ◽  
Walter Judd ◽  
Matthew Gitzendanner ◽  
Pamela S. Soltis ◽  
...  
Keyword(s):  
Population Genetics ◽  
Coastal Plain ◽  
North American ◽  
North American Coastal Plain

Molecular phylogeny of the North American eurybioid asters (Asteraceae, Astereae) based on the nuclear ribosomal internal and external transcribed spacersThis paper is one of a selection of papers published in the Special Issue on Systematics Research.

Botany ◽  
2008 ◽  
Vol 86 (8) ◽  
pp. 901-915 ◽  
Author(s):  
Sugirthini Selliah ◽  
Luc Brouillet
Keyword(s):  
Molecular Phylogeny ◽  
Coastal Plain ◽  
North American ◽  
Phylogenetic Relationships ◽  
Special Issue ◽  
Bayesian Analyses ◽  
The North ◽  
Perennial Herbs ◽  
American Clade ◽  
Selection Of

The eurybioid asters Oreostemma , Herrickia , Eurybia , and Triniteurybia form a complex that is part of the North American clade of tribe Astereae. They comprise 31 species of perennial herbs that are widely distributed on the continent. Previous analyses had shown poor resolution among the four genera and among the species, particularly within Eurybia (23 spp.), which includes diploids and polyploids. We investigated phylogenetic relationships within the group using the nuclear ribosomal ITS and ETS regions, in separate and combined parsimony and Bayesian analyses. We detected incongruence between the ITS and ETS regions when polyploids were included, and so only diploids were considered in the combined analyses. Eurybia pygmaea (Lindl.) G.L. Nesom is confirmed as a member of Symphyotrichum ; Eurybia is monophyletic once this species is re-classified. The eurybioids form a paraphyletic grade with Oreostemma, sister to the remaining taxa, followed in succession by Herrickia , Eurybia , and Triniteurybia , and with the latter genus sister to subtribe Machaerantherinae. Thus the xeric Machaerantherinae (x = 6, 5, 4) is nested within the grade of mesic eurybioids (x = 9). Although largely grouping together, the polyploid taxa of Eurybia apparently do not constitute a clade and their relationships to the diploid taxa and to each other could not be assessed further. Among the diploids, two clades emerge: one including the western Eurybia integrifolia (Nutt.) G.L. Nesom and Eurybia sibirica (L.) G.L. Nesom, and the southeastern Eurybia eryngiifolia (Torr. & A. Gray) G.L. Nesom; and a second including the western Eurybia radulina (A. Gray) G.L. Nesom, the eastern cordate-leaved (sect. Eurybia) and the narrow-leaved, mostly coastal plain species of Eurybia. Our analyses, therefore, do not support the current classifications of Eurybia.

Generic concepts in the Batocrinidae Wachsmuth and Springer, 1881 (class Crinoidea)

2010 ◽  
Vol 84 (1) ◽  
pp. 32-50 ◽  
Author(s):  
William I. Ausich ◽  
Thomas W. Kammer
Keyword(s):  
North America ◽  
North American ◽  
Valid Species ◽  
New Genera ◽  
Phylogenetic Hypothesis ◽  
Significant Contributor ◽  
The North ◽  
Nomina Dubia ◽  
Global Biodiversity ◽  
Stratigraphic Ranges

The Batocrinidae was a component of the North America Early Mississippian crinoid fauna and a significant contributor to the global biodiversity spike referred to as the “Age of Crinoids.” All batocrinids are North American, and all but one species are confined to the Tournaisian and Visean. In this contribution, genera are objectively defined on discrete characters, and the generic assignment of all valid species is re-evaluated. A phylogenetic hypothesis is presented for relationships within the Batocrinidae based on parsimony-based analyses and known stratigraphic ranges.Fifteen basic batocrinid architectural designs are recognized as genera, and four new genera are described:Glannearycrinusn. gen.,Gongylocrinusn. gen,Magnuscrinusn. gen., andSimatocrinusn. gen.Batocrinuswas a catch-all genus for any Mississippian camerate with tetragonal first primibrachials and an anal tube; thus, many late 19thcentury species are in need of a modern generic assignment. In this contribution, 61 percent of the 166 currently valid batocrinid species are reassigned to different genera. In addition,Sunwaptacrinusis transferred to the Batocrinidae, six species are transferred out of the Batocrinidae, and five species are designated as nomina dubia.

Sign in / Sign up

Export Citation Format

Share Document