Topic
Cymopterus
About: Cymopterus is a research topic. Over the lifetime, 21 publications have been published within this topic receiving 256 citations.
Papers
TL;DR: To elucidate patterns in the evolution of specific fruit characters and to evaluate their utility in circumscribing genera unambiguously, additional evidence was procured from cross-sections of mature fruits and the results of cladistic analysis of 25 morphological characters were obtained.
Abstract: Cladistic analyses of DNA sequences from the nuclear rDNA internal transcribed spacer region and cpDNA rps16 intron and, for a subset of taxa, the cpDNA trnF-trnL-trnT locus were carried out to evaluate the monophyly of Cymopterus and to ascertain its phylogenetic placement among the other perennial genera of Apiaceae (Umbelliferae) subfamily Apioideae endemic to western North America. To elucidate patterns in the evolution of specific fruit characters and to evaluate their utility in circumscribing genera unambiguously, additional evidence was procured from cross-sections of mature fruits and the results of cladistic analysis of 25 morphological characters. Analyses of the partitioned data sets resulted in weakly supported and largely unresolved phylogenetic hypotheses, possibly due to the rapid radiation of the group, whereas the combined analysis of all molecular evidence resulted in a well-resolved phylogeny with higher bootstrap support. The traditionally used fruit characters of wing shape and compo...
58 citations
TL;DR: The results indicate that the perennial, endemic apioid umbellifers of North America constitute a (weakly supported) monophyletic group, with Angelica and the meso-American Arracacia clade comprising two of several possible sister groups.
Abstract: Phylogenetic analyses of 159 DNA sequences from the nuclear rDNA internal transcribed spacer region were conducted to evaluate the monophyly of the herbaceous, perennial genera of Apiaceae subfamily Apioideae endemic to North America (north of Mexico) and to determine the relationships of those elements that currently comprise Cymopterus within the group. The results of a previous phylogenetic study were equivocal in suggesting monophyly for these perennial, endemic taxa and revealed Cymopterus to be polyphyletic, with its species closely linked with those of Aletes, Lomatium, Musineon, Oreoxis, Orogenia, Podistera, Pseudocymopterus, Pteryxia, and Tauschia. Herein, we expand sampling to include comprehensive representation of Aletes, Cymopterus, Musineon, Oreoxis, Orogenia, Podistera, Pseudocymopterus, and Pteryxia, and greater representation of Lomatium and Tauschia. We also include all members of two genera not examined previously, Glehnia and Oreonana, as well as additional outgroup genera fro...
46 citations
TL;DR: Results from a dietary analysis of eight grasshopper species inhabiting a shrub-steppe community in southeastern Washington showed that 15 vascular plant species served as food items.
Abstract: Results from a dietary analysis of eight grasshopper species inhabiting a shrub-steppe community in southeastern Washington showed that 15 vascular plant species served as food items. Several plant species occurred at higher frequencies in the diet samples than in the plant community. Big sagebrush (Artemisia tridentata) was the most frequently selected plant species, followed by turpentine cymopterus (Cymopterus terebinthinus), green rabbitbrush (Chrysothammus viscidiflorus), and Carey's balsamroot (Balsamorhiza careyana).
35 citations
20 citations
TL;DR: Rps16 intron sequence data from 74 accessions of Cymopterus and its allies are procured so that ITS and intron matrices are available for the same set of 129 taxa, revealing that the perennial, endemic apioid genera of North America (north of Mexico) comprise a weakly supported monophyletic group.
19 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2017 | 1 |
| 2014 | 1 |
| 2013 | 1 |
| 2010 | 3 |
| 2007 | 1 |
| 2006 | 1 |