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A community‐derived classification for extant lycophytes and ferns
A modern, comprehensive classification for lycophytes and ferns, down to the genus level, utilizing a community‐based approach, that uses monophyly as the primary criterion for the recognition of taxa, but also aims to preserve existing taxa and circumscriptions that are both widely accepted and consistent with the understanding of pteridophyte phylogeny.
A molecular phylogeny of scaly tree ferns (Cyatheaceae).
- Petra Korall, D. Conant, J. Metzgar, H. Schneider, K. Pryer
- Biology, Environmental ScienceAmerican journal of botany
- 1 May 2007
This work investigates the phylogenetic relationships of scaly tree ferns based on DNA sequence data from five plastid regions and concludes that indusium shape is homoplastic it does contain useful phylogenetic information that supports some of the larger clades recognised.
The Paraphyly of Osmunda is Confirmed by Phylogenetic Analyses of Seven Plastid Loci
A stable, well-supported classification for extant Osmundaceae is proposed, along with a key to all genera and subgenera, and finds that subg.
Tree ferns: monophyletic groups and their relationships as revealed by four protein-coding plastid loci.
Phylogeny and Divergence Time Estimates for the Fern Genus Azolla (Salviniaceae)
A phylogeny for all extant species of the heterosporous fern genus Azolla is presented here based on more than 5000 base pairs of DNA sequence data from six plastid loci, in agreement with other recent molecular phylogenetic hypotheses that support the monophyly of sections Azolla and Rhizosperma and the proposed relationships within section Azolla.
Relation between stable isotope ratios in human red blood cells and hair: implications for using the nitrogen isotope ratio of hair as a biomarker of eicosapentaenoic acid and docosahexaenoic acid.
- S. Nash, A. Kristal, B. Boyer, I. King, J. Metzgar, D. O'Brien
- Environmental Science, MedicineThe American journal of clinical nutrition
- 1 December 2009
The use of hair delta(15)N values as a biomarker of EPA and DHA intakes in large populations could use biomarkers rather than self-reports to assess these fatty acids.
Diversification and reticulation in the circumboreal fern genus Cryptogramma.
Polyploidy in gymnosperms - Insights into the genomic and evolutionary consequences of polyploidy in Ephedra.
Evolutionary relationships within the Neotropical, eusporangiate fern genus Danaea (Marattiaceae).